
From john@johnlange.ca  Mon Jun  1 12:25:28 2009
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From: John Lange <john@johnlange.ca>
To: ecrit <ecrit@ietf.org>
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Subject: [Ecrit] Emergency Call Framework for Canada; Questions on draft-ietf-ecrit-framework-09
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On April 15 2009, the Canadian Radio and Telecommunications Commission
(CRTC), which is the Canadian equivalent of the FCC, issued "Telecom
Notice of Consultation CRTC 2009-194".

http://www.crtc.gc.ca/eng/archive/2009/2009-194.htm

Paragraph 17 asks; "Are there alternative solutions that would improve
on the current nomadic VoIP 9-1-1 service."

The proposed architecture was developed by Bell Canada based very
loosely on NENAi2 with extensive modifications. As it was developed by
the ILECs in 2006/2007, it does not employ the IETF standards.

I am working on a submission to this proceeding which advocates the
implementation of the standards developed by the IETF's ECRIT working
group and it's members. (As a side note, if there are any participants
on this list which are interested in helping with this effort, please do
contact me.)

After examining draft-ietf-ecrit-framework-09 and it's related RFCs and
RFC-drafts, I have some specific questions/concerns which I hope this
list can answer.

The Emergency Call Framework (ECF) as proposed :

- Location is cached at end-point during boot/location discovery but
there does not appear to be any mechanism whereby the end-point
announces the success of this process to the SIP Registrar.

If the device is able to determine it's location it should relay the
location information to the SIP registration server and the SIP
registrar should cache this information.

This allows the SIP Registrar and SIP proxy the ability to act
"on-behalf-of" end points that are not able to determine their location
either because they are not location capable, or because they are not
able to determine location from their access provider.

Furthermore, it removes the burden of "real-time" "on-behalf-of"
functionality from the rest of the network.

The ability of the registrar to query and cache location data for
endpoints as opposed to the requirement to perform location
determination in real-time, has a dramatic impact on the technical
requirements of the overall solution.

If location data must be queried in real-time during an actual emergency
event, the network components must be engineered to a much higher
standard. In some jurisdictions the mandated hardware and network
requirements will be impacted significantly. No less than redundant
five-nine hardware running on dedicated private networks will be
required resulting in higher costs.

I submit that a query-and-cache methodology is more in line with the
spirit of other IETF protocols, the DNS system being a prime example.

- Concerns with draft-ietf-geopriv-lis-discovery:

The focus of LIS discovery seems to be on local access network methods
such as DHCP and LLDP.

DHCP & LLDP are not good choices for LIS discovery because they are not
supported in the residential market. Residential firewall devices are
not likely to have DHCP/LLDP functionality and the likelihood that these
devices will be replaced or upgraded is small.

It would therefore seem that the emphasis should be on a LIS discovery
mechanism that does not rely on the local network such as STUN + DNS.

1) Device determines its IP address by querying the STUN server.
2) Device determines its domain name using reverse DNS.
3) Device does LIS discovery via DNS (SRV/NAPTR).

- draft-ietf-ecrit-phonebcp 6.3: "Proxies MAY provide location on behalf
of devices if: The proxy has a relationship with all access networks the
device could connect to".

This wording seems overly restrictive; in effect "all access networks
the device could connect to" amounts to every network on earth which
seems like an unreasonably high standard.

How about:

"Proxies MAY provide location on behalf of devices if: the device does
not provide it's own location and the proxy is able to determine
location on-behalf-of the device.

Any comments and/or questions would be welcome.

Regards,
-- 
John Lange
http://www.johnlange.ca


From br@brianrosen.net  Mon Jun  1 14:09:20 2009
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From: "Brian Rosen" <br@brianrosen.net>
To: "'John Lange'" <john@johnlange.ca>, "'ecrit'" <ecrit@ietf.org>
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Subject: Re: [Ecrit] Emergency Call Framework for Canada; Questions on draft-ietf-ecrit-framework-09
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At the time of the call, the device either does have its location, or it
doesn't.

If it does, then the SIP proxy can use it, if it needs to, because it's on
the signaling.
There isn't any point in caching it at the proxy, and it's a privacy issue
if it does.

The reason you want to get fresh location is that it's pretty darn hard to
know if a device is mobile and thus location at boot time is not necessarily
correct at run time.  If the device is fixed location, and the location at
boot is the same as location at call time, then if the location
infrastructure fails, the cached location is all you have, but it's correct.
That implies that the infrastructure doesn't absolutely need to be 5 nines.

"On behalf of" is needed when the device DOESN'T get it's location from its
access network.  I think you have a point on the language of the on behalf
of language in -phonebcp, but your suggestion is not good enough.  The
problem to be solved is one way or another we have to get location.  The
current wording is aimed at proxies who think they ought to do it always,
and the language says, fine, as long as you CAN do it always.  

Your language says "do it if you can" but that let's the proxy off the hook;
it has to work always.

I suppose we could craft something that is more like, if the proxy knows
that the device will be used on some networks that supply location to the
device, and in every other network it can supply location OBO, then it's
okay.

Brian

> -----Original Message-----
> From: ecrit-bounces@ietf.org [mailto:ecrit-bounces@ietf.org] On Behalf
> Of John Lange
> Sent: Monday, June 01, 2009 3:25 PM
> To: ecrit
> Subject: [Ecrit] Emergency Call Framework for Canada; Questions on
> draft-ietf-ecrit-framework-09
> 
> On April 15 2009, the Canadian Radio and Telecommunications Commission
> (CRTC), which is the Canadian equivalent of the FCC, issued "Telecom
> Notice of Consultation CRTC 2009-194".
> 
> http://www.crtc.gc.ca/eng/archive/2009/2009-194.htm
> 
> Paragraph 17 asks; "Are there alternative solutions that would improve
> on the current nomadic VoIP 9-1-1 service."
> 
> The proposed architecture was developed by Bell Canada based very
> loosely on NENAi2 with extensive modifications. As it was developed by
> the ILECs in 2006/2007, it does not employ the IETF standards.
> 
> I am working on a submission to this proceeding which advocates the
> implementation of the standards developed by the IETF's ECRIT working
> group and it's members. (As a side note, if there are any participants
> on this list which are interested in helping with this effort, please
> do
> contact me.)
> 
> After examining draft-ietf-ecrit-framework-09 and it's related RFCs and
> RFC-drafts, I have some specific questions/concerns which I hope this
> list can answer.
> 
> The Emergency Call Framework (ECF) as proposed :
> 
> - Location is cached at end-point during boot/location discovery but
> there does not appear to be any mechanism whereby the end-point
> announces the success of this process to the SIP Registrar.
> 
> If the device is able to determine it's location it should relay the
> location information to the SIP registration server and the SIP
> registrar should cache this information.
> 
> This allows the SIP Registrar and SIP proxy the ability to act
> "on-behalf-of" end points that are not able to determine their location
> either because they are not location capable, or because they are not
> able to determine location from their access provider.
> 
> Furthermore, it removes the burden of "real-time" "on-behalf-of"
> functionality from the rest of the network.
> 
> The ability of the registrar to query and cache location data for
> endpoints as opposed to the requirement to perform location
> determination in real-time, has a dramatic impact on the technical
> requirements of the overall solution.
> 
> If location data must be queried in real-time during an actual
> emergency
> event, the network components must be engineered to a much higher
> standard. In some jurisdictions the mandated hardware and network
> requirements will be impacted significantly. No less than redundant
> five-nine hardware running on dedicated private networks will be
> required resulting in higher costs.
> 
> I submit that a query-and-cache methodology is more in line with the
> spirit of other IETF protocols, the DNS system being a prime example.
> 
> - Concerns with draft-ietf-geopriv-lis-discovery:
> 
> The focus of LIS discovery seems to be on local access network methods
> such as DHCP and LLDP.
> 
> DHCP & LLDP are not good choices for LIS discovery because they are not
> supported in the residential market. Residential firewall devices are
> not likely to have DHCP/LLDP functionality and the likelihood that
> these
> devices will be replaced or upgraded is small.
> 
> It would therefore seem that the emphasis should be on a LIS discovery
> mechanism that does not rely on the local network such as STUN + DNS.
> 
> 1) Device determines its IP address by querying the STUN server.
> 2) Device determines its domain name using reverse DNS.
> 3) Device does LIS discovery via DNS (SRV/NAPTR).
> 
> - draft-ietf-ecrit-phonebcp 6.3: "Proxies MAY provide location on
> behalf
> of devices if: The proxy has a relationship with all access networks
> the
> device could connect to".
> 
> This wording seems overly restrictive; in effect "all access networks
> the device could connect to" amounts to every network on earth which
> seems like an unreasonably high standard.
> 
> How about:
> 
> "Proxies MAY provide location on behalf of devices if: the device does
> not provide it's own location and the proxy is able to determine
> location on-behalf-of the device.
> 
> Any comments and/or questions would be welcome.
> 
> Regards,
> --
> John Lange
> http://www.johnlange.ca
> 
> _______________________________________________
> Ecrit mailing list
> Ecrit@ietf.org
> https://www.ietf.org/mailman/listinfo/ecrit


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Subject: Re: [Ecrit] Emergency Call Framework for Canada; Questions on  draft-ietf-ecrit-framework-09
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John

some comments in-line below

At 02:25 PM 6/1/2009, John Lange wrote:
>On April 15 2009, the Canadian Radio and Telecommunications Commission
>(CRTC), which is the Canadian equivalent of the FCC, issued "Telecom
>Notice of Consultation CRTC 2009-194".
>
>http://www.crtc.gc.ca/eng/archive/2009/2009-194.htm
>
>Paragraph 17 asks; "Are there alternative solutions that would improve
>on the current nomadic VoIP 9-1-1 service."
>
>The proposed architecture was developed by Bell Canada based very
>loosely on NENAi2 with extensive modifications. As it was developed by
>the ILECs in 2006/2007, it does not employ the IETF standards.
>
>I am working on a submission to this proceeding which advocates the
>implementation of the standards developed by the IETF's ECRIT working
>group and it's members. (As a side note, if there are any participants
>on this list which are interested in helping with this effort, please do
>contact me.)
>
>After examining draft-ietf-ecrit-framework-09 and it's related RFCs and
>RFC-drafts, I have some specific questions/concerns which I hope this
>list can answer.
>
>The Emergency Call Framework (ECF) as proposed :
>
>- Location is cached at end-point during boot/location discovery but
>there does not appear to be any mechanism whereby the end-point
>announces the success of this process to the SIP Registrar.

This can be done with this specification:
http://www.ietf.org/internet-drafts/draft-ietf-sip-location-conveyance-13.txt


>If the device is able to determine it's location it should relay the
>location information to the SIP registration server and the SIP
>registrar should cache this information.

The registrar caching geolocation is not a protocol issue, it's a 
configuration issue (once it receives the location from the 
endpoint). Notice this does not have to be with the first REGISTER 
request (meaning with a subsequent one), and/or it could be with each 
REGISTER request.


>This allows the SIP Registrar and SIP proxy the ability to act
>"on-behalf-of" end points that are not able to determine their location
>either because they are not location capable, or because they are not
>able to determine location from their access provider.

I'm missing what you mean by the starting "this" in the paragraph above?

If the UA has its location, nothing needs to act "on-behalf-of" (OBO) 
it when sending location in any SIP request.


>Furthermore, it removes the burden of "real-time" "on-behalf-of"
>functionality from the rest of the network.

If endpoints have their location (your original premise), OBO is 
unnecessary -- which further reduces network complexity, no?


>The ability of the registrar to query and cache location data for
>endpoints as opposed to the requirement to perform location
>determination in real-time, has a dramatic impact on the technical
>requirements of the overall solution.

How is this better or easier or an optimization from the endpoint 
including its location in the SIP request in the first place?


>If location data must be queried in real-time during an actual emergency
>event, the network components must be engineered to a much higher
>standard. In some jurisdictions the mandated hardware and network
>requirements will be impacted significantly. No less than redundant
>five-nine hardware running on dedicated private networks will be
>required resulting in higher costs.

again, all this goes away if the endpoint has its location prior to 
placing the emergency call, then including this location information 
if more current location information cannot be discovered easily. 
Remember, unless you believe that everything needs to be built for 
mobile endpoints (i.e., those that actually move from room to room 
and from city to city with many times within the same day), being IP 
based doesn't mean endpoints move much.  Further, given the fact that 
there are lower layer solutions already in place (802.11k and y and 
3GPP) -- the IETF doesn't need to solve everything moving as if it 
was never where it is before.  For example, my IP phones at home 
haven't moved all day (or all week, or all year, etc) -- therefore 
the location value they understand 1 minute ago, as well as a day 
ago, and a month ago haven't changed. This makes these locations 
valid for call routing and dispatch.

Mobile nodes that are 3GPP based have their own way of tracking 
location changes.

Mobile nodes that are 802.11 based will likely have a valid location 
for call routing at any time during the day, but dispatch could take 
a bit longer to determine. The good thing here is that most systems 
can determine location within 15 seconds for dispatch -- and I'd like 
to meet the dispatchers that can make it to their destination in time 
for that to be an issue  ;-)


>I submit that a query-and-cache methodology is more in line with the
>spirit of other IETF protocols, the DNS system being a prime example.
>
>- Concerns with draft-ietf-geopriv-lis-discovery:
>
>The focus of LIS discovery seems to be on local access network methods
>such as DHCP and LLDP.
>
>DHCP & LLDP are not good choices for LIS discovery because they are not
>supported in the residential market. Residential firewall devices are
>not likely to have DHCP/LLDP functionality and the likelihood that these
>devices will be replaced or upgraded is small.

For LLDP, I fully agree with what you have above. I've had 4 ISPs 
over the last 10 years, and EACH of them have used DHCP, so I'm not 
sure where you get your data wrt DHCP not being supported in the 
residential market.


>It would therefore seem that the emphasis should be on a LIS discovery
>mechanism that does not rely on the local network such as STUN + DNS.

How many vendors in the residential market do you know of that implement STUN?

It appears you keep getting back to a solution that requires an 
upgrade in the access networks or endpoints.


>1) Device determines its IP address by querying the STUN server.
>2) Device determines its domain name using reverse DNS.
>3) Device does LIS discovery via DNS (SRV/NAPTR).
>
>- draft-ietf-ecrit-phonebcp 6.3: "Proxies MAY provide location on behalf
>of devices if: The proxy has a relationship with all access networks the
>device could connect to".
>
>This wording seems overly restrictive; in effect "all access networks
>the device could connect to" amounts to every network on earth which
>seems like an unreasonably high standard.
>
>How about:
>
>"Proxies MAY provide location on behalf of devices if: the device does
>not provide it's own location and the proxy is able to determine
>location on-behalf-of the device.

How does anyone know if this location OBO by the proxy is good enough 
for dispatch?

I think (and this is just my opinion) that proxies in this situation 
will be just guessing where the endpoints are...


>Any comments and/or questions would be welcome.
>
>Regards,
>--
>John Lange
>http://www.johnlange.ca
>
>_______________________________________________
>Ecrit mailing list
>Ecrit@ietf.org
>https://www.ietf.org/mailman/listinfo/ecrit


From john@johnlange.ca  Tue Jun  2 11:13:19 2009
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I covered a lot of ground in my last post and I can tell from the
responses that some of the points weren't clear.

I apologize so please let me clarify;

- I'm not disputing that having the endpoint do network discovery of
location is the best first choice.

What I'm saying is;

1) Endpoint location discovery via DHCP is not going to work for
residential so some other mechanism will need to be employed (and I
think it should be STUN + DNS).

2) The SIP Registrar needs to know if the end point has it's location so
that the SIP Registrar can do OBO and discover the Emergency Services
Routing Proxy (ESRP) URI _before_ an emergency call is placed.

3) allowing the OBO to happen before the call will dramatically reduce
the network infrastructure requirements and therefore the cost of
implementing the solution because real-time IP location determination
done to a standard good enough for emergency call routing (less than 3
seconds) requires a significantly more robust solution than a
query-cache methodology.

---

The bottom line here is that if the device doesn't know it's location
and the SIP registrar isn't aware that it needs to do OBO, then in all
likelihood the device can not place an emergency call to the correct
ESRP since querying location on-the-fly will be too slow to route the
call correctly.

That's it in a nutshell but I'm going to pull all the threads together
and reply with some more detail to some specific questions inline below:

On Mon, 2009-06-01 at 17:01 -0500, James M. Polk wrote:
> For LLDP, I fully agree with what you have above. I've had 4 ISPs 
> over the last 10 years, and EACH of them have used DHCP, so I'm not 
> sure where you get your data wrt DHCP not being supported in the 
> residential market.

I'm talking about residential firewall/routers. Someone else on this
list pointed me to this:

"Location Information Server (LIS) Discovery From Behind Residential
Gateways"

http://tools.ietf.org/html/draft-thomson-geopriv-res-gw-lis-discovery-00

> >It would therefore seem that the emphasis should be on a LIS discovery
> >mechanism that does not rely on the local network such as STUN + DNS.
> 
> How many vendors in the residential market do you know of that implement STUN?

STUN would be implemented by the VOIP provider and their devices would
be provisioned to query their own STUN servers. Many VOIP providers are
using STUN today and every recent VOIP device I've looked at recently
has an implementation of STUN so I submit that it is widely supported.

> It appears you keep getting back to a solution that requires an 
> upgrade in the access networks

Not at all. That is precisely what I'm trying to avoid.

> or endpoints.

An upgrade to endpoints so they can do location is inevitable but the
OBO functionality is there to cover-off those devices which can not be
upgraded.

On Mon, 2009-06-01 at 17:09 -0400, Brian Rosen wrote:
> There isn't any point in caching it at the proxy, and it's a privacy
> issue if it does.

You are correct that caching isn't required if the device knows it's
location _provided that_ the proxy is aware that the device already has
it's location.

However, as I stated above, if the devices doesn't know it's location
the registrar needs to know about it so it can do OBO. And if the
registrar is doing OBO then it needs to cache the result.

So my point would be, if you are going to allow the registrar to do OBO
and cache results then it might as well cache location for the other
devices as well so it can use that information as a backup just in case
the device looses its location or becomes unreachable for some reason
(for example, lets say the internet to the endpoint drops during a 911
call. If the proxy has the info cached it could answer OBO the device).

Furthermore, (*** this is a critical point ***) if the device does not
provide location and the OBO server is not able to determine location,
this could trigger some other action. This allows VOIP providers to
easily identify "dead spots" in the LIS/LOST (such as non-compliant
ISPs) and take corrective action (notify the regulator).

On the topic of privacy; real-time IP location determination is a
_MASSIVE_ privacy issue that will need to be addressed with public
policy, not an RFC.

Keep in mind that the VOIP provider already has sensitive personal
information for the user so suffice to say that as long as the
information is only accessible to authorized people, then exactly who
those authorized people are is something for the politicians to decide.

> "On behalf of" is needed when the device DOESN'T get it's location from its
> access network.  I think you have a point on the language of the on behalf
> of language in -phonebcp, but your suggestion is not good enough.  The
> problem to be solved is one way or another we have to get location.  The
> current wording is aimed at proxies who think they ought to do it always,
> and the language says, fine, as long as you CAN do it always.  

Actually, I think BCP would be: "Proxies MUST provide location on behalf
of devices ONLY if the device does not provide it's own location."

"If the device does not provide location and the proxy can't find
location OBO the device, then the call MUST be routed to a 3rd party
call centre for verbal location and routing."

Regards,
-- 
John Lange
http://www.johnlange.ca


From br@brianrosen.net  Tue Jun  2 11:35:06 2009
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Why would the proxy really care to know if the device can get its own
location?  I would assume it would OBO as much as it could.  In general, OBO
isn't reliable unless there is a regulatory requirement to make
relationships between providers exist in every case.  You can't have
environments where it doesn't always work (unless you know for sure that the
access network provides location).

You're focused on fixed devices, which is okay, but what you are describing
won't (necessarily) work for mobile or nomadic devices.

We're also familiar with the no DHCP in DSL environments.  Although we
recognize that this is the case today, we understand that is not the case
tomorrow, and this whole document is aimed at new devices.   If the access
network is upgraded to handle location, it's likely to offer DHCP (and, BTW,
it doesn't have to use DHCP to give out IP addresses).

Brian

> -----Original Message-----
> From: ecrit-bounces@ietf.org [mailto:ecrit-bounces@ietf.org] On Behalf
> Of John Lange
> Sent: Tuesday, June 02, 2009 2:13 PM
> To: ecrit
> Subject: Re: [Ecrit] Emergency Call Framework for Canada; Questions on
> draft-ietf-ecrit-framework-09
> 
> I covered a lot of ground in my last post and I can tell from the
> responses that some of the points weren't clear.
> 
> I apologize so please let me clarify;
> 
> - I'm not disputing that having the endpoint do network discovery of
> location is the best first choice.
> 
> What I'm saying is;
> 
> 1) Endpoint location discovery via DHCP is not going to work for
> residential so some other mechanism will need to be employed (and I
> think it should be STUN + DNS).
> 
> 2) The SIP Registrar needs to know if the end point has it's location
> so
> that the SIP Registrar can do OBO and discover the Emergency Services
> Routing Proxy (ESRP) URI _before_ an emergency call is placed.
> 
> 3) allowing the OBO to happen before the call will dramatically reduce
> the network infrastructure requirements and therefore the cost of
> implementing the solution because real-time IP location determination
> done to a standard good enough for emergency call routing (less than 3
> seconds) requires a significantly more robust solution than a
> query-cache methodology.
> 
> ---
> 
> The bottom line here is that if the device doesn't know it's location
> and the SIP registrar isn't aware that it needs to do OBO, then in all
> likelihood the device can not place an emergency call to the correct
> ESRP since querying location on-the-fly will be too slow to route the
> call correctly.
> 
> That's it in a nutshell but I'm going to pull all the threads together
> and reply with some more detail to some specific questions inline
> below:
> 
> On Mon, 2009-06-01 at 17:01 -0500, James M. Polk wrote:
> > For LLDP, I fully agree with what you have above. I've had 4 ISPs
> > over the last 10 years, and EACH of them have used DHCP, so I'm not
> > sure where you get your data wrt DHCP not being supported in the
> > residential market.
> 
> I'm talking about residential firewall/routers. Someone else on this
> list pointed me to this:
> 
> "Location Information Server (LIS) Discovery From Behind Residential
> Gateways"
> 
> http://tools.ietf.org/html/draft-thomson-geopriv-res-gw-lis-discovery-
> 00
> 
> > >It would therefore seem that the emphasis should be on a LIS
> discovery
> > >mechanism that does not rely on the local network such as STUN +
> DNS.
> >
> > How many vendors in the residential market do you know of that
> implement STUN?
> 
> STUN would be implemented by the VOIP provider and their devices would
> be provisioned to query their own STUN servers. Many VOIP providers are
> using STUN today and every recent VOIP device I've looked at recently
> has an implementation of STUN so I submit that it is widely supported.
> 
> > It appears you keep getting back to a solution that requires an
> > upgrade in the access networks
> 
> Not at all. That is precisely what I'm trying to avoid.
> 
> > or endpoints.
> 
> An upgrade to endpoints so they can do location is inevitable but the
> OBO functionality is there to cover-off those devices which can not be
> upgraded.
> 
> On Mon, 2009-06-01 at 17:09 -0400, Brian Rosen wrote:
> > There isn't any point in caching it at the proxy, and it's a privacy
> > issue if it does.
> 
> You are correct that caching isn't required if the device knows it's
> location _provided that_ the proxy is aware that the device already has
> it's location.
> 
> However, as I stated above, if the devices doesn't know it's location
> the registrar needs to know about it so it can do OBO. And if the
> registrar is doing OBO then it needs to cache the result.
> 
> So my point would be, if you are going to allow the registrar to do OBO
> and cache results then it might as well cache location for the other
> devices as well so it can use that information as a backup just in case
> the device looses its location or becomes unreachable for some reason
> (for example, lets say the internet to the endpoint drops during a 911
> call. If the proxy has the info cached it could answer OBO the device).
> 
> Furthermore, (*** this is a critical point ***) if the device does not
> provide location and the OBO server is not able to determine location,
> this could trigger some other action. This allows VOIP providers to
> easily identify "dead spots" in the LIS/LOST (such as non-compliant
> ISPs) and take corrective action (notify the regulator).
> 
> On the topic of privacy; real-time IP location determination is a
> _MASSIVE_ privacy issue that will need to be addressed with public
> policy, not an RFC.
> 
> Keep in mind that the VOIP provider already has sensitive personal
> information for the user so suffice to say that as long as the
> information is only accessible to authorized people, then exactly who
> those authorized people are is something for the politicians to decide.
> 
> > "On behalf of" is needed when the device DOESN'T get it's location
> from its
> > access network.  I think you have a point on the language of the on
> behalf
> > of language in -phonebcp, but your suggestion is not good enough.
> The
> > problem to be solved is one way or another we have to get location.
> The
> > current wording is aimed at proxies who think they ought to do it
> always,
> > and the language says, fine, as long as you CAN do it always.
> 
> Actually, I think BCP would be: "Proxies MUST provide location on
> behalf
> of devices ONLY if the device does not provide it's own location."
> 
> "If the device does not provide location and the proxy can't find
> location OBO the device, then the call MUST be routed to a 3rd party
> call centre for verbal location and routing."
> 
> Regards,
> --
> John Lange
> http://www.johnlange.ca
> 
> _______________________________________________
> Ecrit mailing list
> Ecrit@ietf.org
> https://www.ietf.org/mailman/listinfo/ecrit


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Subject: Re: [Ecrit] Emergency Call Framework for Canada; Questions on  draft-ietf-ecrit-framework-09
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At 01:13 PM 6/2/2009, John Lange wrote:
>I covered a lot of ground in my last post and I can tell from the
>responses that some of the points weren't clear.
>
>I apologize so please let me clarify;
>
>- I'm not disputing that having the endpoint do network discovery of
>location is the best first choice.

this was not clear in your original post.


>What I'm saying is;
>
>1) Endpoint location discovery via DHCP is not going to work for
>residential so some other mechanism will need to be employed (and I
>think it should be STUN + DNS).
>
>2) The SIP Registrar needs to know if the end point has it's location so
>that the SIP Registrar can do OBO and discover the Emergency Services
>Routing Proxy (ESRP) URI _before_ an emergency call is placed.

clearly a SIP server that doesn't receive location in a 911 call 
knows to include Ua location if it knows it. The issue is recognizing 
the call is 911 from the URI to know location needs to be looked for 
before transmitting the INVITE on.  The trick is recognizing the URI 
as that of a PSAP (without the sos urn, that is).


>3) allowing the OBO to happen before the call will dramatically reduce
>the network infrastructure requirements and therefore the cost of
>implementing the solution because real-time IP location determination
>done to a standard good enough for emergency call routing (less than 3
>seconds) requires a significantly more robust solution than a
>query-cache methodology.

OBO before the fact means the location information could be 
stale/old/wrong... this was the argument for using a URI instead of 
actual location. It seems we can't get away from this little detail.


>---
>
>The bottom line here is that if the device doesn't know it's location
>and the SIP registrar isn't aware that it needs to do OBO, then in all
>likelihood the device can not place an emergency call to the correct
>ESRP since querying location on-the-fly will be too slow to route the
>call correctly.
>
>That's it in a nutshell but I'm going to pull all the threads together
>and reply with some more detail to some specific questions inline below:
>
>On Mon, 2009-06-01 at 17:01 -0500, James M. Polk wrote:
> > For LLDP, I fully agree with what you have above. I've had 4 ISPs
> > over the last 10 years, and EACH of them have used DHCP, so I'm not
> > sure where you get your data wrt DHCP not being supported in the
> > residential market.
>
>I'm talking about residential firewall/routers. Someone else on this
>list pointed me to this:
>
>"Location Information Server (LIS) Discovery From Behind Residential
>Gateways"
>
>http://tools.ietf.org/html/draft-thomson-geopriv-res-gw-lis-discovery-00
>
> > >It would therefore seem that the emphasis should be on a LIS discovery
> > >mechanism that does not rely on the local network such as STUN + DNS.
> >
> > How many vendors in the residential market do you know of that 
> implement STUN?
>
>STUN would be implemented by the VOIP provider and their devices would
>be provisioned to query their own STUN servers. Many VOIP providers are
>using STUN today and every recent VOIP device I've looked at recently
>has an implementation of STUN so I submit that it is widely supported.
>
> > It appears you keep getting back to a solution that requires an
> > upgrade in the access networks
>
>Not at all. That is precisely what I'm trying to avoid.
>
> > or endpoints.
>
>An upgrade to endpoints so they can do location is inevitable but the
>OBO functionality is there to cover-off those devices which can not be
>upgraded.
>
>On Mon, 2009-06-01 at 17:09 -0400, Brian Rosen wrote:
> > There isn't any point in caching it at the proxy, and it's a privacy
> > issue if it does.
>
>You are correct that caching isn't required if the device knows it's
>location _provided that_ the proxy is aware that the device already has
>it's location.
>
>However, as I stated above, if the devices doesn't know it's location
>the registrar needs to know about it so it can do OBO. And if the
>registrar is doing OBO then it needs to cache the result.
>
>So my point would be, if you are going to allow the registrar to do OBO
>and cache results then it might as well cache location for the other
>devices as well so it can use that information as a backup just in case
>the device looses its location or becomes unreachable for some reason
>(for example, lets say the internet to the endpoint drops during a 911
>call. If the proxy has the info cached it could answer OBO the device).
>
>Furthermore, (*** this is a critical point ***) if the device does not
>provide location and the OBO server is not able to determine location,
>this could trigger some other action. This allows VOIP providers to
>easily identify "dead spots" in the LIS/LOST (such as non-compliant
>ISPs) and take corrective action (notify the regulator).
>
>On the topic of privacy; real-time IP location determination is a
>_MASSIVE_ privacy issue that will need to be addressed with public
>policy, not an RFC.
>
>Keep in mind that the VOIP provider already has sensitive personal
>information for the user so suffice to say that as long as the
>information is only accessible to authorized people, then exactly who
>those authorized people are is something for the politicians to decide.
>
> > "On behalf of" is needed when the device DOESN'T get it's location from its
> > access network.  I think you have a point on the language of the on behalf
> > of language in -phonebcp, but your suggestion is not good enough.  The
> > problem to be solved is one way or another we have to get location.  The
> > current wording is aimed at proxies who think they ought to do it always,
> > and the language says, fine, as long as you CAN do it always.
>
>Actually, I think BCP would be: "Proxies MUST provide location on behalf
>of devices ONLY if the device does not provide it's own location."
>
>"If the device does not provide location and the proxy can't find
>location OBO the device, then the call MUST be routed to a 3rd party
>call centre for verbal location and routing."
>
>Regards,
>--
>John Lange
>http://www.johnlange.ca
>
>_______________________________________________
>Ecrit mailing list
>Ecrit@ietf.org
>https://www.ietf.org/mailman/listinfo/ecrit


From fmenard@xittelecom.com  Tue Jun  2 13:15:58 2009
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Subject: Re: [Ecrit] Emergency Call Framework for Canada; Questions on  draft-ietf-ecrit-framework-09
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See www.brisenet.net for my proposed architecture.

We're currently costing the modification of ISC DHCPD to support  
Option 99 pass-through of PIDF-LO's  and my ATA vendor is costing the  
inclusion of DHCP Option 99 & SIP LOCATION CONVEYANCE in their end- 
points, for submission to the CRTC in August.

f.


On 1-Jun-09, at 6:01 PM, James M. Polk wrote:

> John
>
> some comments in-line below
>
> At 02:25 PM 6/1/2009, John Lange wrote:
>> On April 15 2009, the Canadian Radio and Telecommunications  
>> Commission
>> (CRTC), which is the Canadian equivalent of the FCC, issued "Telecom
>> Notice of Consultation CRTC 2009-194".
>>
>> http://www.crtc.gc.ca/eng/archive/2009/2009-194.htm
>>
>> Paragraph 17 asks; "Are there alternative solutions that would  
>> improve
>> on the current nomadic VoIP 9-1-1 service."
>>
>> The proposed architecture was developed by Bell Canada based very
>> loosely on NENAi2 with extensive modifications. As it was developed  
>> by
>> the ILECs in 2006/2007, it does not employ the IETF standards.
>>
>> I am working on a submission to this proceeding which advocates the
>> implementation of the standards developed by the IETF's ECRIT working
>> group and it's members. (As a side note, if there are any  
>> participants
>> on this list which are interested in helping with this effort,  
>> please do
>> contact me.)
>>
>> After examining draft-ietf-ecrit-framework-09 and it's related RFCs  
>> and
>> RFC-drafts, I have some specific questions/concerns which I hope this
>> list can answer.
>>
>> The Emergency Call Framework (ECF) as proposed :
>>
>> - Location is cached at end-point during boot/location discovery but
>> there does not appear to be any mechanism whereby the end-point
>> announces the success of this process to the SIP Registrar.
>
> This can be done with this specification:
> http://www.ietf.org/internet-drafts/draft-ietf-sip-location-conveyance-13.txt
>
>
>> If the device is able to determine it's location it should relay the
>> location information to the SIP registration server and the SIP
>> registrar should cache this information.
>
> The registrar caching geolocation is not a protocol issue, it's a  
> configuration issue (once it receives the location from the  
> endpoint). Notice this does not have to be with the first REGISTER  
> request (meaning with a subsequent one), and/or it could be with  
> each REGISTER request.
>
>
>> This allows the SIP Registrar and SIP proxy the ability to act
>> "on-behalf-of" end points that are not able to determine their  
>> location
>> either because they are not location capable, or because they are not
>> able to determine location from their access provider.
>
> I'm missing what you mean by the starting "this" in the paragraph  
> above?
>
> If the UA has its location, nothing needs to act "on-behalf- 
> of" (OBO) it when sending location in any SIP request.
>
>
>> Furthermore, it removes the burden of "real-time" "on-behalf-of"
>> functionality from the rest of the network.
>
> If endpoints have their location (your original premise), OBO is  
> unnecessary -- which further reduces network complexity, no?
>
>
>> The ability of the registrar to query and cache location data for
>> endpoints as opposed to the requirement to perform location
>> determination in real-time, has a dramatic impact on the technical
>> requirements of the overall solution.
>
> How is this better or easier or an optimization from the endpoint  
> including its location in the SIP request in the first place?
>
>
>> If location data must be queried in real-time during an actual  
>> emergency
>> event, the network components must be engineered to a much higher
>> standard. In some jurisdictions the mandated hardware and network
>> requirements will be impacted significantly. No less than redundant
>> five-nine hardware running on dedicated private networks will be
>> required resulting in higher costs.
>
> again, all this goes away if the endpoint has its location prior to  
> placing the emergency call, then including this location information  
> if more current location information cannot be discovered easily.  
> Remember, unless you believe that everything needs to be built for  
> mobile endpoints (i.e., those that actually move from room to room  
> and from city to city with many times within the same day), being IP  
> based doesn't mean endpoints move much.  Further, given the fact  
> that there are lower layer solutions already in place (802.11k and y  
> and 3GPP) -- the IETF doesn't need to solve everything moving as if  
> it was never where it is before.  For example, my IP phones at home  
> haven't moved all day (or all week, or all year, etc) -- therefore  
> the location value they understand 1 minute ago, as well as a day  
> ago, and a month ago haven't changed. This makes these locations  
> valid for call routing and dispatch.
>
> Mobile nodes that are 3GPP based have their own way of tracking  
> location changes.
>
> Mobile nodes that are 802.11 based will likely have a valid location  
> for call routing at any time during the day, but dispatch could take  
> a bit longer to determine. The good thing here is that most systems  
> can determine location within 15 seconds for dispatch -- and I'd  
> like to meet the dispatchers that can make it to their destination  
> in time for that to be an issue  ;-)
>
>
>> I submit that a query-and-cache methodology is more in line with the
>> spirit of other IETF protocols, the DNS system being a prime example.
>>
>> - Concerns with draft-ietf-geopriv-lis-discovery:
>>
>> The focus of LIS discovery seems to be on local access network  
>> methods
>> such as DHCP and LLDP.
>>
>> DHCP & LLDP are not good choices for LIS discovery because they are  
>> not
>> supported in the residential market. Residential firewall devices are
>> not likely to have DHCP/LLDP functionality and the likelihood that  
>> these
>> devices will be replaced or upgraded is small.
>
> For LLDP, I fully agree with what you have above. I've had 4 ISPs  
> over the last 10 years, and EACH of them have used DHCP, so I'm not  
> sure where you get your data wrt DHCP not being supported in the  
> residential market.
>
>
>> It would therefore seem that the emphasis should be on a LIS  
>> discovery
>> mechanism that does not rely on the local network such as STUN + DNS.
>
> How many vendors in the residential market do you know of that  
> implement STUN?
>
> It appears you keep getting back to a solution that requires an  
> upgrade in the access networks or endpoints.
>
>
>> 1) Device determines its IP address by querying the STUN server.
>> 2) Device determines its domain name using reverse DNS.
>> 3) Device does LIS discovery via DNS (SRV/NAPTR).
>>
>> - draft-ietf-ecrit-phonebcp 6.3: "Proxies MAY provide location on  
>> behalf
>> of devices if: The proxy has a relationship with all access  
>> networks the
>> device could connect to".
>>
>> This wording seems overly restrictive; in effect "all access networks
>> the device could connect to" amounts to every network on earth which
>> seems like an unreasonably high standard.
>>
>> How about:
>>
>> "Proxies MAY provide location on behalf of devices if: the device  
>> does
>> not provide it's own location and the proxy is able to determine
>> location on-behalf-of the device.
>
> How does anyone know if this location OBO by the proxy is good  
> enough for dispatch?
>
> I think (and this is just my opinion) that proxies in this situation  
> will be just guessing where the endpoints are...
>
>
>> Any comments and/or questions would be welcome.
>>
>> Regards,
>> --
>> John Lange
>> http://www.johnlange.ca
>>
>> _______________________________________________
>> Ecrit mailing list
>> Ecrit@ietf.org
>> https://www.ietf.org/mailman/listinfo/ecrit
>
> _______________________________________________
> Ecrit mailing list
> Ecrit@ietf.org
> https://www.ietf.org/mailman/listinfo/ecrit


From john@johnlange.ca  Tue Jun  2 14:20:10 2009
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On Tue, 2009-06-02 at 14:35 -0400, Brian Rosen wrote:
> Why would the proxy really care to know if the device can get its own
> location?  I would assume it would OBO as much as it could.  In general, OBO
> isn't reliable unless there is a regulatory requirement to make
> relationships between providers exist in every case.

Yes, the IP location determination infrastructure requires a
relationship between the VOIP Provider, the ESRP (PSAP), and the
ASP/ISP. I took this as being understood because it's mentioned in the
paragraph 2 of draft-ietf-ecrit-framework: "Supporting emergency calling
requires cooperation by a number of elements, their vendors and service
providers."

The requirement to have a relationship between the providers isn't a
significant obstacle. The regulator will say "you MUST implement this"
and it will happen. The goal is to have a standard that can be followed
so that when the mandate is imposed, the solution is known and hopefully
there are already vendors who support it.

>   You can't have environments where it doesn't always work

You can't? Well that makes some sense in the context of
draft-ietf-ecrit-framework. Since the Internet is an environment that
"doesn't always work", perhaps draft-ietf-ecrit-framework was not
intended for use there? It makes no specific mention of this but by
design it could only be deployed where the endpoint has a direct
relationship with a local network that knows about location. That pretty
much eliminates all residential and small/medium business.

> You're focused on fixed devices, which is okay, but what you are describing
> won't (necessarily) work for mobile or nomadic devices.

What I envision will work for fixed and nomadic devices that access the
internet through fixed access points that cover relatively small
geographical areas. In other words, residential and small/medium
businesses.

Large enterprises would implement their own solutions and that is where
the DHCP style solution described in the ecrit-framework makes the most
sense.

Mobile devices would also work depending on how they are accessing the
internet but I don't want to side-track on the discussion of cell phones
vs. mobile VOIP phones etc.

> We're also familiar with the no DHCP in DSL environments. Although we
> recognize that this is the case today, we understand that is not the case
> tomorrow, and this whole document is aimed at new devices.

As I said, maybe I've misunderstood the purpose of this group. If
draft-ietf-ecrit-framework is just intended as "blue-sky" or use in the
enterprise then I apologize for hijacking this list with my concerns
over real-world implementation.

>  If the access network is upgraded to handle location, it's likely to
> offer DHCP

... and a DHCP solution won't work behind residential firewalls and
won't allow OBO functionality so it can't be implemented for the number
one place where governments are likely to mandate a solution;
nomadic/residential VOIP.

IMHO, if you don't have a solution for residential then it's all just
theory.

That is why I'm advocating a closer look at something like STUN + DNS
for LIS discovery. It will work, allows OBO and requires no new
hardware.

If the IETF publishes a standard then each jurisdiction can decide to
implement it or not.

Chances are good they will implement it because the advantage of
implementing an IETF standard over some other "home-brew" solution is
that your citizens can roam to other jurisdictions and vice-versa. Plus
the likelihood of endpoints supporting the IETF standard at a reasonable
cost is much higher than if vendors have to implement a unique solution
for every jurisdiction.

That is what standards are all about after all...

On the other hand, I doubt any solution will ever be universally
implemented but that's fine. As a VOIP provider I only have to meet the
regulatory requirements in my jurisdiction, not every place on earth.

Regards,
-- 
John Lange
http://www.johnlange.ca


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=0D=0AHow will address the millions of already deployed terminals and route=
rs=3F=0D=0A=0D=0A=0D=0A=0D=0A-----Original Message-----=0D=0AFrom: ecrit-bo=
unces@ietf.org on behalf of "Fran=E7ois D. M=E9nard"=0D=0ASent: Tue 6/2/200=
9 9:36 AM=0D=0ATo: James M. Polk=0D=0ACc: ecrit=0D=0ASubject: Re: [Ecrit] E=
mergency Call Framework for Canada;Questions on  draft-ietf-ecrit-framework=
-09=0D=0A=20=0D=0A=0D=0ASee www.brisenet.net for my proposed architecture.=0D=
=0A=0D=0AWe're currently costing the modification of ISC DHCPD to support  =0D=
=0AOption 99 pass-through of PIDF-LO's  and my ATA vendor is costing the  =0D=
=0Ainclusion of DHCP Option 99 & SIP LOCATION CONVEYANCE in their end-=20=0D=
=0Apoints, for submission to the CRTC in August.=0D=0A=0D=0Af.=0D=0A=0D=0A=0D=
=0AOn 1-Jun-09, at 6:01 PM, James M. Polk wrote:=0D=0A=0D=0A> John=0D=0A>=0D=
=0A> some comments in-line below=0D=0A>=0D=0A> At 02:25 PM 6/1/2009, John L=
ange wrote:=0D=0A>> On April 15 2009, the Canadian Radio and Telecommunicat=
ions =20=0D=0A>> Commission=0D=0A>> (CRTC), which is the Canadian equivalen=
t of the FCC, issued "Telecom=0D=0A>> Notice of Consultation CRTC 2009-194"=
=2E=0D=0A>>=0D=0A>> http://www.crtc.gc.ca/eng/archive/2009/2009-194.htm=0D=0A=
>>=0D=0A>> Paragraph 17 asks; "Are there alternative solutions that would  =0D=
=0A>> improve=0D=0A>> on the current nomadic VoIP 9-1-1 service."=0D=0A>>=0D=
=0A>> The proposed architecture was developed by Bell Canada based very=0D=0A=
>> loosely on NENAi2 with extensive modifications. As it was developed =20=0D=
=0A>> by=0D=0A>> the ILECs in 2006/2007, it does not employ the IETF standa=
rds.=0D=0A>>=0D=0A>> I am working on a submission to this proceeding which =
advocates the=0D=0A>> implementation of the standards developed by the IETF=
's ECRIT working=0D=0A>> group and it's members. (As a side note, if there =
are any =20=0D=0A>> participants=0D=0A>> on this list which are interested =
in helping with this effort, =20=0D=0A>> please do=0D=0A>> contact me.)=0D=0A=
>>=0D=0A>> After examining draft-ietf-ecrit-framework-09 and it's related R=
FCs =20=0D=0A>> and=0D=0A>> RFC-drafts, I have some specific questions/conc=
erns which I hope this=0D=0A>> list can answer.=0D=0A>>=0D=0A>> The Emergen=
cy Call Framework (ECF) as proposed :=0D=0A>>=0D=0A>> - Location is cached =
at end-point during boot/location discovery but=0D=0A>> there does not appe=
ar to be any mechanism whereby the end-point=0D=0A>> announces the success =
of this process to the SIP Registrar.=0D=0A>=0D=0A> This can be done with t=
his specification:=0D=0A> http://www.ietf.org/internet-drafts/draft-ietf-si=
p-location-conveyance-13.txt=0D=0A>=0D=0A>=0D=0A>> If the device is able to=
 determine it's location it should relay the=0D=0A>> location information t=
o the SIP registration server and the SIP=0D=0A>> registrar should cache th=
is information.=0D=0A>=0D=0A> The registrar caching geolocation is not a pr=
otocol issue, it's a =20=0D=0A> configuration issue (once it receives the l=
ocation from the =20=0D=0A> endpoint). Notice this does not have to be with=
 the first REGISTER =20=0D=0A> request (meaning with a subsequent one), and=
/or it could be with =20=0D=0A> each REGISTER request.=0D=0A>=0D=0A>=0D=0A>=
> This allows the SIP Registrar and SIP proxy the ability to act=0D=0A>> "o=
n-behalf-of" end points that are not able to determine their =20=0D=0A>> lo=
cation=0D=0A>> either because they are not location capable, or because the=
y are not=0D=0A>> able to determine location from their access provider.=0D=
=0A>=0D=0A> I'm missing what you mean by the starting "this" in the paragra=
ph =20=0D=0A> above=3F=0D=0A>=0D=0A> If the UA has its location, nothing ne=
eds to act "on-behalf-=20=0D=0A> of" (OBO) it when sending location in any =
SIP request.=0D=0A>=0D=0A>=0D=0A>> Furthermore, it removes the burden of "r=
eal-time" "on-behalf-of"=0D=0A>> functionality from the rest of the network=
=2E=0D=0A>=0D=0A> If endpoints have their location (your original premise),=
 OBO is =20=0D=0A> unnecessary -- which further reduces network complexity,=
 no=3F=0D=0A>=0D=0A>=0D=0A>> The ability of the registrar to query and cach=
e location data for=0D=0A>> endpoints as opposed to the requirement to perf=
orm location=0D=0A>> determination in real-time, has a dramatic impact on t=
he technical=0D=0A>> requirements of the overall solution.=0D=0A>=0D=0A> Ho=
w is this better or easier or an optimization from the endpoint =20=0D=0A> =
including its location in the SIP request in the first place=3F=0D=0A>=0D=0A=
>=0D=0A>> If location data must be queried in real-time during an actual  =0D=
=0A>> emergency=0D=0A>> event, the network components must be engineered to=
 a much higher=0D=0A>> standard. In some jurisdictions the mandated hardwar=
e and network=0D=0A>> requirements will be impacted significantly. No less =
than redundant=0D=0A>> five-nine hardware running on dedicated private netw=
orks will be=0D=0A>> required resulting in higher costs.=0D=0A>=0D=0A> agai=
n, all this goes away if the endpoint has its location prior to =20=0D=0A> =
placing the emergency call, then including this location information =20=0D=
=0A> if more current location information cannot be discovered easily. =20=0D=
=0A> Remember, unless you believe that everything needs to be built for  =0D=
=0A> mobile endpoints (i.e., those that actually move from room to room  =0D=
=0A> and from city to city with many times within the same day), being IP  =0D=
=0A> based doesn't mean endpoints move much.  Further, given the fact =20=0D=
=0A> that there are lower layer solutions already in place (802.11k and y  =0D=
=0A> and 3GPP) -- the IETF doesn't need to solve everything moving as if  =0D=
=0A> it was never where it is before.  For example, my IP phones at home  =0D=
=0A> haven't moved all day (or all week, or all year, etc) -- therefore  =0D=
=0A> the location value they understand 1 minute ago, as well as a day =20=0D=
=0A> ago, and a month ago haven't changed. This makes these locations =20=0D=
=0A> valid for call routing and dispatch.=0D=0A>=0D=0A> Mobile nodes that a=
re 3GPP based have their own way of tracking =20=0D=0A> location changes.=0D=
=0A>=0D=0A> Mobile nodes that are 802.11 based will likely have a valid loc=
ation =20=0D=0A> for call routing at any time during the day, but dispatch =
could take =20=0D=0A> a bit longer to determine. The good thing here is tha=
t most systems =20=0D=0A> can determine location within 15 seconds for disp=
atch -- and I'd =20=0D=0A> like to meet the dispatchers that can make it to=
 their destination =20=0D=0A> in time for that to be an issue  ;-)=0D=0A>=0D=
=0A>=0D=0A>> I submit that a query-and-cache methodology is more in line wi=
th the=0D=0A>> spirit of other IETF protocols, the DNS system being a prime=
 example.=0D=0A>>=0D=0A>> - Concerns with draft-ietf-geopriv-lis-discovery:=0D=
=0A>>=0D=0A>> The focus of LIS discovery seems to be on local access networ=
k =20=0D=0A>> methods=0D=0A>> such as DHCP and LLDP.=0D=0A>>=0D=0A>> DHCP &=
 LLDP are not good choices for LIS discovery because they are =20=0D=0A>> n=
ot=0D=0A>> supported in the residential market. Residential firewall device=
s are=0D=0A>> not likely to have DHCP/LLDP functionality and the likelihood=
 that =20=0D=0A>> these=0D=0A>> devices will be replaced or upgraded is sma=
ll.=0D=0A>=0D=0A> For LLDP, I fully agree with what you have above. I've ha=
d 4 ISPs =20=0D=0A> over the last 10 years, and EACH of them have used DHCP=
, so I'm not =20=0D=0A> sure where you get your data wrt DHCP not being sup=
ported in the =20=0D=0A> residential market.=0D=0A>=0D=0A>=0D=0A>> It would=
 therefore seem that the emphasis should be on a LIS =20=0D=0A>> discovery=0D=
=0A>> mechanism that does not rely on the local network such as STUN + DNS.=0D=
=0A>=0D=0A> How many vendors in the residential market do you know of that =
=20=0D=0A> implement STUN=3F=0D=0A>=0D=0A> It appears you keep getting back=
 to a solution that requires an =20=0D=0A> upgrade in the access networks o=
r endpoints.=0D=0A>=0D=0A>=0D=0A>> 1) Device determines its IP address by q=
uerying the STUN server.=0D=0A>> 2) Device determines its domain name using=
 reverse DNS.=0D=0A>> 3) Device does LIS discovery via DNS (SRV/NAPTR).=0D=0A=
>>=0D=0A>> - draft-ietf-ecrit-phonebcp 6.3: "Proxies MAY provide location o=
n =20=0D=0A>> behalf=0D=0A>> of devices if: The proxy has a relationship wi=
th all access =20=0D=0A>> networks the=0D=0A>> device could connect to".=0D=
=0A>>=0D=0A>> This wording seems overly restrictive; in effect "all access =
networks=0D=0A>> the device could connect to" amounts to every network on e=
arth which=0D=0A>> seems like an unreasonably high standard.=0D=0A>>=0D=0A>=
> How about:=0D=0A>>=0D=0A>> "Proxies MAY provide location on behalf of dev=
ices if: the device =20=0D=0A>> does=0D=0A>> not provide it's own location =
and the proxy is able to determine=0D=0A>> location on-behalf-of the device=
=2E=0D=0A>=0D=0A> How does anyone know if this location OBO by the proxy is=
 good =20=0D=0A> enough for dispatch=3F=0D=0A>=0D=0A> I think (and this is =
just my opinion) that proxies in this situation =20=0D=0A> will be just gue=
ssing where the endpoints are...=0D=0A>=0D=0A>=0D=0A>> Any comments and/or =
questions would be welcome.=0D=0A>>=0D=0A>> Regards,=0D=0A>> --=0D=0A>> Joh=
n Lange=0D=0A>> http://www.johnlange.ca=0D=0A>>=0D=0A>> ___________________=
____________________________=0D=0A>> Ecrit mailing list=0D=0A>> Ecrit@ietf.=
org=0D=0A>> https://www.ietf.org/mailman/listinfo/ecrit=0D=0A>=0D=0A> _____=
__________________________________________=0D=0A> Ecrit mailing list=0D=0A>=
 Ecrit@ietf.org=0D=0A> https://www.ietf.org/mailman/listinfo/ecrit=0D=0A=0D=
=0A_______________________________________________=0D=0AEcrit mailing list=0D=
=0AEcrit@ietf.org=0D=0Ahttps://www.ietf.org/mailman/listinfo/ecrit=0D=0A=0D=
=0A=0D=0A------------------------------------------------------------------=
------------------------------=0D=0AThis message is for the designated reci=
pient only and may=0D=0Acontain privileged, proprietary, or otherwise priva=
te information. =20=0D=0AIf you have received it in error, please notify th=
e sender=0D=0Aimmediately and delete the original.  Any unauthorized use of=0D=
=0Athis email is prohibited.=0D=0A-----------------------------------------=
-------------------------------------------------------=0D=0A[mf2]=0D=0A

From john@johnlange.ca  Tue Jun  2 14:40:05 2009
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On Tue, 2009-06-02 at 13:42 -0500, James M. Polk wrote:

> clearly a SIP server that doesn't receive location in a 911 call 
> knows to include Ua location if it knows it.

Under the proposed draft-ietf-ecrit-framework, the sip registrar will
never know the location of the end-point and certainly not in time to
route the call to the correct PSAP.

> OBO before the fact means the location information could be 
> stale/old/wrong... this was the argument for using a URI instead of 
> actual location. It seems we can't get away from this little detail.

Yes, it "could be" but that is very unlikely. How often will a device
roam so far from the location it was at when it registered with the VOIP
provider that the cached location can't be used for routing to the
correct ESRP/PSAP? And don't forget that an updated location can still
be queried during the call to erase any doubt.

There will always be examples of where it won't work, wifi on trains and
plains is a good example so they'll have to implement their own location
or we'll have to live with it.

If we wait for a solution that solves every possible scenario then we'll
just have to invent new scenarios ;)

-- 
John Lange
http://www.johnlange.ca


From br@brianrosen.net  Tue Jun  2 14:44:17 2009
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Cc: 'ecrit' <ecrit@ietf.org>
Subject: Re: [Ecrit] Emergency Call Framework for Canada; Questions on draft-ietf-ecrit-framework-09
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We're trying to define real world solutions.  We may fail, but we're trying.

OBO doesn't always work, because by the time a call gets to a VoIP provider,
it's IP address can be obscured by VPNs.  It doesn't work because the
regulator can't force connections between a service provider it doesn't have
jurisdiction over to an access network (which it probably always has
jurisdiction over, because it's always local).  The easy example is my
famous "Sierra Leone VoIP Services Pty" provider serving a customer at a
Starbucks in, say, Calgary.  You can scream all you want, but CRTC can't
tell SLVS to connect to Rogers Cable.

On the other hand, the device can get location from the hotspot in
Starbucks, who can pass it through SLVS on it's way to the Calgary PSAP.

OBO is usually aimed at transition: before we get the devices all upgraded,
what do we do.  In that environment, we may not be able to get location
every time, although I think the VPN problem is so prevalent that it's going
to fail too often.  I'm still in favor of trying to get OBO to work, for
transition only, and with the caveat that it may not always work.

DHCP works very well in residential VoIP.  The phone may have a NATed
address, but as long as the home router passes the location option, the
query to the provider will have the right thing to get the DHCP system to
return the location of the residence.  If you don't like DHCP, use HELD, but
you still have some remnants of the VPN problem.  Don't confuse DHCP for LIS
discovery with DHCP for location configuration.  Both work, but DHCP
discovery of a HELD server works.

I've stayed out of most of the LIS discovery discussions because I don't
seem to have much to offer.  I'll let others reply to STUN + Reverse lookup
+ SRV. It's been discussed many times.

Brian

> -----Original Message-----
> From: John Lange [mailto:john@johnlange.ca]
> Sent: Tuesday, June 02, 2009 5:20 PM
> To: Brian Rosen
> Cc: 'ecrit'
> Subject: RE: [Ecrit] Emergency Call Framework for Canada; Questions on
> draft-ietf-ecrit-framework-09
> 
> On Tue, 2009-06-02 at 14:35 -0400, Brian Rosen wrote:
> > Why would the proxy really care to know if the device can get its own
> > location?  I would assume it would OBO as much as it could.  In
> general, OBO
> > isn't reliable unless there is a regulatory requirement to make
> > relationships between providers exist in every case.
> 
> Yes, the IP location determination infrastructure requires a
> relationship between the VOIP Provider, the ESRP (PSAP), and the
> ASP/ISP. I took this as being understood because it's mentioned in the
> paragraph 2 of draft-ietf-ecrit-framework: "Supporting emergency
> calling
> requires cooperation by a number of elements, their vendors and service
> providers."
> 
> The requirement to have a relationship between the providers isn't a
> significant obstacle. The regulator will say "you MUST implement this"
> and it will happen. The goal is to have a standard that can be followed
> so that when the mandate is imposed, the solution is known and
> hopefully
> there are already vendors who support it.
> 
> >   You can't have environments where it doesn't always work
> 
> You can't? Well that makes some sense in the context of
> draft-ietf-ecrit-framework. Since the Internet is an environment that
> "doesn't always work", perhaps draft-ietf-ecrit-framework was not
> intended for use there? It makes no specific mention of this but by
> design it could only be deployed where the endpoint has a direct
> relationship with a local network that knows about location. That
> pretty
> much eliminates all residential and small/medium business.
> 
> > You're focused on fixed devices, which is okay, but what you are
> describing
> > won't (necessarily) work for mobile or nomadic devices.
> 
> What I envision will work for fixed and nomadic devices that access the
> internet through fixed access points that cover relatively small
> geographical areas. In other words, residential and small/medium
> businesses.
> 
> Large enterprises would implement their own solutions and that is where
> the DHCP style solution described in the ecrit-framework makes the most
> sense.
> 
> Mobile devices would also work depending on how they are accessing the
> internet but I don't want to side-track on the discussion of cell
> phones
> vs. mobile VOIP phones etc.
> 
> > We're also familiar with the no DHCP in DSL environments. Although we
> > recognize that this is the case today, we understand that is not the
> case
> > tomorrow, and this whole document is aimed at new devices.
> 
> As I said, maybe I've misunderstood the purpose of this group. If
> draft-ietf-ecrit-framework is just intended as "blue-sky" or use in the
> enterprise then I apologize for hijacking this list with my concerns
> over real-world implementation.
> 
> >  If the access network is upgraded to handle location, it's likely to
> > offer DHCP
> 
> ... and a DHCP solution won't work behind residential firewalls and
> won't allow OBO functionality so it can't be implemented for the number
> one place where governments are likely to mandate a solution;
> nomadic/residential VOIP.
> 
> IMHO, if you don't have a solution for residential then it's all just
> theory.
> 
> That is why I'm advocating a closer look at something like STUN + DNS
> for LIS discovery. It will work, allows OBO and requires no new
> hardware.
> 
> If the IETF publishes a standard then each jurisdiction can decide to
> implement it or not.
> 
> Chances are good they will implement it because the advantage of
> implementing an IETF standard over some other "home-brew" solution is
> that your citizens can roam to other jurisdictions and vice-versa. Plus
> the likelihood of endpoints supporting the IETF standard at a
> reasonable
> cost is much higher than if vendors have to implement a unique solution
> for every jurisdiction.
> 
> That is what standards are all about after all...
> 
> On the other hand, I doubt any solution will ever be universally
> implemented but that's fine. As a VOIP provider I only have to meet the
> regulatory requirements in my jurisdiction, not every place on earth.
> 
> Regards,
> --
> John Lange
> http://www.johnlange.ca


From James.Winterbottom@andrew.com  Tue Jun  2 14:44:59 2009
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Thread-Topic: [Ecrit] Emergency Call Framework for Canada; Questions on  draft-ietf-ecrit-framework-09
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From: "Winterbottom, James" <James.Winterbottom@andrew.com>
To: =?iso-8859-1?Q?=22Fran=E7ois_D=2E_M=E9nard=22?= <fmenard@xittelecom.com>
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Subject: Re: [Ecrit] Emergency Call Framework for Canada; Questions on  draft-ietf-ecrit-framework-09
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That is not entirely true.=0D=0AIt works for any device that is behind a re=
sidential gateway.=0D=0ASo, unless I am mistaken, your proposal will also r=
equire every single residential gateway to be updated AND, for all DSL that=
 uses PPP as opposed to DHCP to be upgraded either to use DHCP or to suppor=
t modifications so that a new options is available over PPP, and supported =
by the RG.=0D=0A=0D=0AI think that this number is substantially more than t=
he 400,000 devices you are talking about and a massive massive cost in infr=
astructure upgrade, substantially more that the $500m you are talking about=
=2E=0D=0A=0D=0ACheers=0D=0AJames=0D=0A=0D=0A=0D=0A-----Original Message----=
-=0D=0AFrom: "Fran=E7ois D. M=E9nard" [mailto:fmenard@xittelecom.com]=0D=0A=
Sent: Tue 6/2/2009 4:38 PM=0D=0ATo: Winterbottom, James=0D=0ACc: James M. P=
olk; ecrit=0D=0ASubject: Re: [Ecrit] Emergency Call Framework for Canada;Qu=
estions on  draft-ietf-ecrit-framework-09=0D=0A=20=0D=0AJames,=0D=0A=0D=0AT=
he architecture that ILECs are proposing in Canada does not work for =20=0D=
=0Adevices which are not on the public Internet.=0D=0A=0D=0AIt'll be cheape=
r to upgrade 400,000 ATAs in Canada than to spend 500M$ =20=0D=0Aon impleme=
ntation of a non-ECRIT solution.=0D=0A=0D=0AF.=0D=0A=0D=0A=0D=0A=0D=0AOn 2-=
Jun-09, at 5:27 PM, Winterbottom, James wrote:=0D=0A=0D=0A>=0D=0A> How will=
 address the millions of already deployed terminals and =20=0D=0A> routers=3F=0D=
=0A>=0D=0A>=0D=0A>=0D=0A> -----Original Message-----=0D=0A> From: ecrit-bou=
nces@ietf.org on behalf of "Fran=E7ois D. M=E9nard"=0D=0A> Sent: Tue 6/2/20=
09 9:36 AM=0D=0A> To: James M. Polk=0D=0A> Cc: ecrit=0D=0A> Subject: Re: [E=
crit] Emergency Call Framework for Canada;Questions =20=0D=0A> on  draft-ie=
tf-ecrit-framework-09=0D=0A>=0D=0A>=0D=0A> See www.brisenet.net for my prop=
osed architecture.=0D=0A>=0D=0A> We're currently costing the modification o=
f ISC DHCPD to support=0D=0A> Option 99 pass-through of PIDF-LO's  and my A=
TA vendor is costing the=0D=0A> inclusion of DHCP Option 99 & SIP LOCATION =
CONVEYANCE in their end-=0D=0A> points, for submission to the CRTC in Augus=
t.=0D=0A>=0D=0A> f.=0D=0A>=0D=0A>=0D=0A> On 1-Jun-09, at 6:01 PM, James M. =
Polk wrote:=0D=0A>=0D=0A>> John=0D=0A>>=0D=0A>> some comments in-line below=0D=
=0A>>=0D=0A>> At 02:25 PM 6/1/2009, John Lange wrote:=0D=0A>>> On April 15 =
2009, the Canadian Radio and Telecommunications=0D=0A>>> Commission=0D=0A>>=
> (CRTC), which is the Canadian equivalent of the FCC, issued "Telecom=0D=0A=
>>> Notice of Consultation CRTC 2009-194".=0D=0A>>>=0D=0A>>> http://www.crt=
c.gc.ca/eng/archive/2009/2009-194.htm=0D=0A>>>=0D=0A>>> Paragraph 17 asks; =
"Are there alternative solutions that would=0D=0A>>> improve=0D=0A>>> on th=
e current nomadic VoIP 9-1-1 service."=0D=0A>>>=0D=0A>>> The proposed archi=
tecture was developed by Bell Canada based very=0D=0A>>> loosely on NENAi2 =
with extensive modifications. As it was developed=0D=0A>>> by=0D=0A>>> the =
ILECs in 2006/2007, it does not employ the IETF standards.=0D=0A>>>=0D=0A>>=
> I am working on a submission to this proceeding which advocates the=0D=0A=
>>> implementation of the standards developed by the IETF's ECRIT =20=0D=0A=
>>> working=0D=0A>>> group and it's members. (As a side note, if there are =
any=0D=0A>>> participants=0D=0A>>> on this list which are interested in hel=
ping with this effort,=0D=0A>>> please do=0D=0A>>> contact me.)=0D=0A>>>=0D=
=0A>>> After examining draft-ietf-ecrit-framework-09 and it's related RFCs=0D=
=0A>>> and=0D=0A>>> RFC-drafts, I have some specific questions/concerns whi=
ch I hope =20=0D=0A>>> this=0D=0A>>> list can answer.=0D=0A>>>=0D=0A>>> The=
 Emergency Call Framework (ECF) as proposed :=0D=0A>>>=0D=0A>>> - Location =
is cached at end-point during boot/location discovery but=0D=0A>>> there do=
es not appear to be any mechanism whereby the end-point=0D=0A>>> announces =
the success of this process to the SIP Registrar.=0D=0A>>=0D=0A>> This can =
be done with this specification:=0D=0A>> http://www.ietf.org/internet-draft=
s/draft-ietf-sip-location-conveyance-13.txt=0D=0A>>=0D=0A>>=0D=0A>>> If the=
 device is able to determine it's location it should relay the=0D=0A>>> loc=
ation information to the SIP registration server and the SIP=0D=0A>>> regis=
trar should cache this information.=0D=0A>>=0D=0A>> The registrar caching g=
eolocation is not a protocol issue, it's a=0D=0A>> configuration issue (onc=
e it receives the location from the=0D=0A>> endpoint). Notice this does not=
 have to be with the first REGISTER=0D=0A>> request (meaning with a subsequ=
ent one), and/or it could be with=0D=0A>> each REGISTER request.=0D=0A>>=0D=
=0A>>=0D=0A>>> This allows the SIP Registrar and SIP proxy the ability to a=
ct=0D=0A>>> "on-behalf-of" end points that are not able to determine their=0D=
=0A>>> location=0D=0A>>> either because they are not location capable, or b=
ecause they are =20=0D=0A>>> not=0D=0A>>> able to determine location from t=
heir access provider.=0D=0A>>=0D=0A>> I'm missing what you mean by the star=
ting "this" in the paragraph=0D=0A>> above=3F=0D=0A>>=0D=0A>> If the UA has=
 its location, nothing needs to act "on-behalf-=0D=0A>> of" (OBO) it when s=
ending location in any SIP request.=0D=0A>>=0D=0A>>=0D=0A>>> Furthermore, i=
t removes the burden of "real-time" "on-behalf-of"=0D=0A>>> functionality f=
rom the rest of the network.=0D=0A>>=0D=0A>> If endpoints have their locati=
on (your original premise), OBO is=0D=0A>> unnecessary -- which further red=
uces network complexity, no=3F=0D=0A>>=0D=0A>>=0D=0A>>> The ability of the =
registrar to query and cache location data for=0D=0A>>> endpoints as oppose=
d to the requirement to perform location=0D=0A>>> determination in real-tim=
e, has a dramatic impact on the technical=0D=0A>>> requirements of the over=
all solution.=0D=0A>>=0D=0A>> How is this better or easier or an optimizati=
on from the endpoint=0D=0A>> including its location in the SIP request in t=
he first place=3F=0D=0A>>=0D=0A>>=0D=0A>>> If location data must be queried=
 in real-time during an actual=0D=0A>>> emergency=0D=0A>>> event, the netwo=
rk components must be engineered to a much higher=0D=0A>>> standard. In som=
e jurisdictions the mandated hardware and network=0D=0A>>> requirements wil=
l be impacted significantly. No less than redundant=0D=0A>>> five-nine hard=
ware running on dedicated private networks will be=0D=0A>>> required result=
ing in higher costs.=0D=0A>>=0D=0A>> again, all this goes away if the endpo=
int has its location prior to=0D=0A>> placing the emergency call, then incl=
uding this location information=0D=0A>> if more current location informatio=
n cannot be discovered easily.=0D=0A>> Remember, unless you believe that ev=
erything needs to be built for=0D=0A>> mobile endpoints (i.e., those that a=
ctually move from room to room=0D=0A>> and from city to city with many time=
s within the same day), being IP=0D=0A>> based doesn't mean endpoints move =
much.  Further, given the fact=0D=0A>> that there are lower layer solutions=
 already in place (802.11k and y=0D=0A>> and 3GPP) -- the IETF doesn't need=
 to solve everything moving as if=0D=0A>> it was never where it is before. =
 For example, my IP phones at home=0D=0A>> haven't moved all day (or all we=
ek, or all year, etc) -- therefore=0D=0A>> the location value they understa=
nd 1 minute ago, as well as a day=0D=0A>> ago, and a month ago haven't chan=
ged. This makes these locations=0D=0A>> valid for call routing and dispatch=
=2E=0D=0A>>=0D=0A>> Mobile nodes that are 3GPP based have their own way of =
tracking=0D=0A>> location changes.=0D=0A>>=0D=0A>> Mobile nodes that are 80=
2.11 based will likely have a valid location=0D=0A>> for call routing at an=
y time during the day, but dispatch could take=0D=0A>> a bit longer to dete=
rmine. The good thing here is that most systems=0D=0A>> can determine locat=
ion within 15 seconds for dispatch -- and I'd=0D=0A>> like to meet the disp=
atchers that can make it to their destination=0D=0A>> in time for that to b=
e an issue  ;-)=0D=0A>>=0D=0A>>=0D=0A>>> I submit that a query-and-cache me=
thodology is more in line with the=0D=0A>>> spirit of other IETF protocols,=
 the DNS system being a prime =20=0D=0A>>> example.=0D=0A>>>=0D=0A>>> - Con=
cerns with draft-ietf-geopriv-lis-discovery:=0D=0A>>>=0D=0A>>> The focus of=
 LIS discovery seems to be on local access network=0D=0A>>> methods=0D=0A>>=
> such as DHCP and LLDP.=0D=0A>>>=0D=0A>>> DHCP & LLDP are not good choices=
 for LIS discovery because they are=0D=0A>>> not=0D=0A>>> supported in the =
residential market. Residential firewall devices =20=0D=0A>>> are=0D=0A>>> =
not likely to have DHCP/LLDP functionality and the likelihood that=0D=0A>>>=
 these=0D=0A>>> devices will be replaced or upgraded is small.=0D=0A>>=0D=0A=
>> For LLDP, I fully agree with what you have above. I've had 4 ISPs=0D=0A>=
> over the last 10 years, and EACH of them have used DHCP, so I'm not=0D=0A=
>> sure where you get your data wrt DHCP not being supported in the=0D=0A>>=
 residential market.=0D=0A>>=0D=0A>>=0D=0A>>> It would therefore seem that =
the emphasis should be on a LIS=0D=0A>>> discovery=0D=0A>>> mechanism that =
does not rely on the local network such as STUN + =20=0D=0A>>> DNS.=0D=0A>>=0D=
=0A>> How many vendors in the residential market do you know of that=0D=0A>=
> implement STUN=3F=0D=0A>>=0D=0A>> It appears you keep getting back to a s=
olution that requires an=0D=0A>> upgrade in the access networks or endpoint=
s.=0D=0A>>=0D=0A>>=0D=0A>>> 1) Device determines its IP address by querying=
 the STUN server.=0D=0A>>> 2) Device determines its domain name using rever=
se DNS.=0D=0A>>> 3) Device does LIS discovery via DNS (SRV/NAPTR).=0D=0A>>>=0D=
=0A>>> - draft-ietf-ecrit-phonebcp 6.3: "Proxies MAY provide location on=0D=
=0A>>> behalf=0D=0A>>> of devices if: The proxy has a relationship with all=
 access=0D=0A>>> networks the=0D=0A>>> device could connect to".=0D=0A>>>=0D=
=0A>>> This wording seems overly restrictive; in effect "all access =20=0D=0A=
>>> networks=0D=0A>>> the device could connect to" amounts to every network=
 on earth which=0D=0A>>> seems like an unreasonably high standard.=0D=0A>>>=0D=
=0A>>> How about:=0D=0A>>>=0D=0A>>> "Proxies MAY provide location on behalf=
 of devices if: the device=0D=0A>>> does=0D=0A>>> not provide it's own loca=
tion and the proxy is able to determine=0D=0A>>> location on-behalf-of the =
device.=0D=0A>>=0D=0A>> How does anyone know if this location OBO by the pr=
oxy is good=0D=0A>> enough for dispatch=3F=0D=0A>>=0D=0A>> I think (and thi=
s is just my opinion) that proxies in this situation=0D=0A>> will be just g=
uessing where the endpoints are...=0D=0A>>=0D=0A>>=0D=0A>>> Any comments an=
d/or questions would be welcome.=0D=0A>>>=0D=0A>>> Regards,=0D=0A>>> --=0D=0A=
>>> John Lange=0D=0A>>> http://www.johnlange.ca=0D=0A>>>=0D=0A>>> _________=
______________________________________=0D=0A>>> Ecrit mailing list=0D=0A>>>=
 Ecrit@ietf.org=0D=0A>>> https://www.ietf.org/mailman/listinfo/ecrit=0D=0A>=
>=0D=0A>> _______________________________________________=0D=0A>> Ecrit mai=
ling list=0D=0A>> Ecrit@ietf.org=0D=0A>> https://www.ietf.org/mailman/listi=
nfo/ecrit=0D=0A>=0D=0A> _______________________________________________=0D=0A=
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From jmpolk@cisco.com  Tue Jun  2 14:50:21 2009
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Cc: 'ecrit' <ecrit@ietf.org>
Subject: Re: [Ecrit] Emergency Call Framework for Canada; Questions on  draft-ietf-ecrit-framework-09
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At 04:19 PM 6/2/2009, John Lange wrote:
>That is why I'm advocating a closer look at something like STUN + DNS
>for LIS discovery. It will work, allows OBO and requires no new
>hardware.


James -- upgrading residential gateways to support (DHCP) Option 99 
or 123 requires no new hardware either.... (last I checked)

James



From jmpolk@cisco.com  Tue Jun  2 14:52:56 2009
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Subject: Re: [Ecrit] Emergency Call Framework for Canada; Questions on  draft-ietf-ecrit-framework-09
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James W - I apologize (!!), this is a response to John, not your post 
(which is the next message)

At 04:49 PM 6/2/2009, James M. Polk wrote:
>At 04:19 PM 6/2/2009, John Lange wrote:
>>That is why I'm advocating a closer look at something like STUN + DNS
>>for LIS discovery. It will work, allows OBO and requires no new
>>hardware.
>
>
>James -- upgrading residential gateways to support (DHCP) Option 99 
>or 123 requires no new hardware either.... (last I checked)
>
>James


From fmenard@xittelecom.com  Tue Jun  2 15:01:27 2009
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Subject: Re: [Ecrit] Emergency Call Framework for Canada; Questions on draft-ietf-ecrit-framework-09
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> DHCP works very well in residential VoIP.  The phone may have a NATed
> address, but as long as the home router passes the location option,  
> the
> query to the provider will have the right thing to get the DHCP  
> system to
> return the location of the residence.  If you don't like DHCP, use  
> HELD, but
> you still have some remnants of the VPN problem.  Don't confuse DHCP  
> for LIS
> discovery with DHCP for location configuration.  Both work, but DHCP
> discovery of a HELD server works.
>

I concur.

If you have a router which does not pass on DHCP Option 99, you can  
always initiate a PPPoE tunnel from your ATA and do a DHCP Option 99  
fetching through it.

There is nothing wrong with having multiple PPPoE sessions from your  
home to your ISP, and one dedicated to VoIP.

Furthermore, this will be an excellent mean to use PPPoE to prioritize  
the username/password for a VoIP PPPoE session over the username/ 
password for Internet access, for two sessions coming from the same  
home.

The ATAs we use here can be patched to support DHCP Option 99 fetching  
through a PPPoE session. All you need is to put a little Ethernet  
switch between your DSL modem / Cable Modem and your ATA and to allow  
for the possibility that both your ATA as well as your Router will  
launch a PPPoE tunnel to your ISP.

I'll send you a sticker you can can put on your router here... plug  
here and die - this box does not pass on location.

This architecture has the added bonus of accelerating the transition  
to IPv6.

For those concerned with that, our wholesale cable modem incumbent  
cable operator, permits up to 3 public IPs behind a single cable  
modem, and I use a switch behind my CM to assign a separate public IP  
for my VoIP PBX SIPtrunk client, from the public IP address of my  
router, which currently is too dumb to relay DHCP Option 99.

So all I need is to have the DHCP server programmed to send a PIDF-LO.

And for my SIP client to support SIP LOCATION CONVEYANCE.

And for it not to never send a BYE if I dial 9-1-1, even if I hang-up.

F.


From James.Winterbottom@andrew.com  Tue Jun  2 15:21:43 2009
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Subject: Re: [Ecrit] Emergency Call Framework for Canada; Questions on  draft-ietf-ecrit-framework-09
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=0D=0AThere was one very strong point made in i2 all along, and that is NO =
UPGRADES to residential equipment is required in order for it work. It may =
work better if upgrades are made, but they MUST NOT be required.=0D=0A=0D=0A=
So, if I can use a device inside my home network and it can go out through =
my RG to the Internet and VSP to make an emergency call it has to work out =
of the box, as is, no matter when I bought it. I know some people don't lik=
e these requirements, but they are still requirements.=0D=0A=0D=0AI will al=
so point out that these are the requirements that are addressed in the LIS =
discovery through an RG draft that Martin T is authoring.=0D=0A=0D=0ACheers=0D=
=0AJames=0D=0A=0D=0A-----Original Message-----=0D=0AFrom: ecrit-bounces@iet=
f.org on behalf of James M. Polk=0D=0ASent: Tue 6/2/2009 4:49 PM=0D=0ATo: J=
ohn Lange; Brian Rosen=0D=0ACc: 'ecrit'=0D=0ASubject: Re: [Ecrit] Emergency=
 Call Framework for Canada; Questions on  draft-ietf-ecrit-framework-09=0D=0A=
=20=0D=0AAt 04:19 PM 6/2/2009, John Lange wrote:=0D=0A>That is why I'm advo=
cating a closer look at something like STUN + DNS=0D=0A>for LIS discovery. =
It will work, allows OBO and requires no new=0D=0A>hardware.=0D=0A=0D=0A=0D=
=0AJames -- upgrading residential gateways to support (DHCP) Option 99=20=0D=
=0Aor 123 requires no new hardware either.... (last I checked)=0D=0A=0D=0AJ=
ames=0D=0A=0D=0A=0D=0A_______________________________________________=0D=0A=
Ecrit mailing list=0D=0AEcrit@ietf.org=0D=0Ahttps://www.ietf.org/mailman/li=
stinfo/ecrit=0D=0A=0D=0A=0D=0A---------------------------------------------=
---------------------------------------------------=0D=0AThis message is fo=
r the designated recipient only and may=0D=0Acontain privileged, proprietar=
y, or otherwise private information. =20=0D=0AIf you have received it in er=
ror, please notify the sender=0D=0Aimmediately and delete the original.  An=
y unauthorized use of=0D=0Athis email is prohibited.=0D=0A-----------------=
---------------------------------------------------------------------------=
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From fmenard@xittelecom.com  Tue Jun  2 15:30:09 2009
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Subject: Re: [Ecrit] Emergency Call Framework for Canada; Questions on  draft-ietf-ecrit-framework-09
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James,

The architecture that ILECs are proposing in Canada does not work for =20=

devices which are not on the public Internet.

It'll be cheaper to upgrade 400,000 ATAs in Canada than to spend 500M$ =20=

on implementation of a non-ECRIT solution.

F.



On 2-Jun-09, at 5:27 PM, Winterbottom, James wrote:

>
> How will address the millions of already deployed terminals and =20
> routers?
>
>
>
> -----Original Message-----
> From: ecrit-bounces@ietf.org on behalf of "Fran=E7ois D. M=E9nard"
> Sent: Tue 6/2/2009 9:36 AM
> To: James M. Polk
> Cc: ecrit
> Subject: Re: [Ecrit] Emergency Call Framework for Canada;Questions =20
> on  draft-ietf-ecrit-framework-09
>
>
> See www.brisenet.net for my proposed architecture.
>
> We're currently costing the modification of ISC DHCPD to support
> Option 99 pass-through of PIDF-LO's  and my ATA vendor is costing the
> inclusion of DHCP Option 99 & SIP LOCATION CONVEYANCE in their end-
> points, for submission to the CRTC in August.
>
> f.
>
>
> On 1-Jun-09, at 6:01 PM, James M. Polk wrote:
>
>> John
>>
>> some comments in-line below
>>
>> At 02:25 PM 6/1/2009, John Lange wrote:
>>> On April 15 2009, the Canadian Radio and Telecommunications
>>> Commission
>>> (CRTC), which is the Canadian equivalent of the FCC, issued "Telecom
>>> Notice of Consultation CRTC 2009-194".
>>>
>>> http://www.crtc.gc.ca/eng/archive/2009/2009-194.htm
>>>
>>> Paragraph 17 asks; "Are there alternative solutions that would
>>> improve
>>> on the current nomadic VoIP 9-1-1 service."
>>>
>>> The proposed architecture was developed by Bell Canada based very
>>> loosely on NENAi2 with extensive modifications. As it was developed
>>> by
>>> the ILECs in 2006/2007, it does not employ the IETF standards.
>>>
>>> I am working on a submission to this proceeding which advocates the
>>> implementation of the standards developed by the IETF's ECRIT =20
>>> working
>>> group and it's members. (As a side note, if there are any
>>> participants
>>> on this list which are interested in helping with this effort,
>>> please do
>>> contact me.)
>>>
>>> After examining draft-ietf-ecrit-framework-09 and it's related RFCs
>>> and
>>> RFC-drafts, I have some specific questions/concerns which I hope =20
>>> this
>>> list can answer.
>>>
>>> The Emergency Call Framework (ECF) as proposed :
>>>
>>> - Location is cached at end-point during boot/location discovery but
>>> there does not appear to be any mechanism whereby the end-point
>>> announces the success of this process to the SIP Registrar.
>>
>> This can be done with this specification:
>> =
http://www.ietf.org/internet-drafts/draft-ietf-sip-location-conveyance-13.=
txt
>>
>>
>>> If the device is able to determine it's location it should relay the
>>> location information to the SIP registration server and the SIP
>>> registrar should cache this information.
>>
>> The registrar caching geolocation is not a protocol issue, it's a
>> configuration issue (once it receives the location from the
>> endpoint). Notice this does not have to be with the first REGISTER
>> request (meaning with a subsequent one), and/or it could be with
>> each REGISTER request.
>>
>>
>>> This allows the SIP Registrar and SIP proxy the ability to act
>>> "on-behalf-of" end points that are not able to determine their
>>> location
>>> either because they are not location capable, or because they are =20=

>>> not
>>> able to determine location from their access provider.
>>
>> I'm missing what you mean by the starting "this" in the paragraph
>> above?
>>
>> If the UA has its location, nothing needs to act "on-behalf-
>> of" (OBO) it when sending location in any SIP request.
>>
>>
>>> Furthermore, it removes the burden of "real-time" "on-behalf-of"
>>> functionality from the rest of the network.
>>
>> If endpoints have their location (your original premise), OBO is
>> unnecessary -- which further reduces network complexity, no?
>>
>>
>>> The ability of the registrar to query and cache location data for
>>> endpoints as opposed to the requirement to perform location
>>> determination in real-time, has a dramatic impact on the technical
>>> requirements of the overall solution.
>>
>> How is this better or easier or an optimization from the endpoint
>> including its location in the SIP request in the first place?
>>
>>
>>> If location data must be queried in real-time during an actual
>>> emergency
>>> event, the network components must be engineered to a much higher
>>> standard. In some jurisdictions the mandated hardware and network
>>> requirements will be impacted significantly. No less than redundant
>>> five-nine hardware running on dedicated private networks will be
>>> required resulting in higher costs.
>>
>> again, all this goes away if the endpoint has its location prior to
>> placing the emergency call, then including this location information
>> if more current location information cannot be discovered easily.
>> Remember, unless you believe that everything needs to be built for
>> mobile endpoints (i.e., those that actually move from room to room
>> and from city to city with many times within the same day), being IP
>> based doesn't mean endpoints move much.  Further, given the fact
>> that there are lower layer solutions already in place (802.11k and y
>> and 3GPP) -- the IETF doesn't need to solve everything moving as if
>> it was never where it is before.  For example, my IP phones at home
>> haven't moved all day (or all week, or all year, etc) -- therefore
>> the location value they understand 1 minute ago, as well as a day
>> ago, and a month ago haven't changed. This makes these locations
>> valid for call routing and dispatch.
>>
>> Mobile nodes that are 3GPP based have their own way of tracking
>> location changes.
>>
>> Mobile nodes that are 802.11 based will likely have a valid location
>> for call routing at any time during the day, but dispatch could take
>> a bit longer to determine. The good thing here is that most systems
>> can determine location within 15 seconds for dispatch -- and I'd
>> like to meet the dispatchers that can make it to their destination
>> in time for that to be an issue  ;-)
>>
>>
>>> I submit that a query-and-cache methodology is more in line with the
>>> spirit of other IETF protocols, the DNS system being a prime =20
>>> example.
>>>
>>> - Concerns with draft-ietf-geopriv-lis-discovery:
>>>
>>> The focus of LIS discovery seems to be on local access network
>>> methods
>>> such as DHCP and LLDP.
>>>
>>> DHCP & LLDP are not good choices for LIS discovery because they are
>>> not
>>> supported in the residential market. Residential firewall devices =20=

>>> are
>>> not likely to have DHCP/LLDP functionality and the likelihood that
>>> these
>>> devices will be replaced or upgraded is small.
>>
>> For LLDP, I fully agree with what you have above. I've had 4 ISPs
>> over the last 10 years, and EACH of them have used DHCP, so I'm not
>> sure where you get your data wrt DHCP not being supported in the
>> residential market.
>>
>>
>>> It would therefore seem that the emphasis should be on a LIS
>>> discovery
>>> mechanism that does not rely on the local network such as STUN + =20
>>> DNS.
>>
>> How many vendors in the residential market do you know of that
>> implement STUN?
>>
>> It appears you keep getting back to a solution that requires an
>> upgrade in the access networks or endpoints.
>>
>>
>>> 1) Device determines its IP address by querying the STUN server.
>>> 2) Device determines its domain name using reverse DNS.
>>> 3) Device does LIS discovery via DNS (SRV/NAPTR).
>>>
>>> - draft-ietf-ecrit-phonebcp 6.3: "Proxies MAY provide location on
>>> behalf
>>> of devices if: The proxy has a relationship with all access
>>> networks the
>>> device could connect to".
>>>
>>> This wording seems overly restrictive; in effect "all access =20
>>> networks
>>> the device could connect to" amounts to every network on earth which
>>> seems like an unreasonably high standard.
>>>
>>> How about:
>>>
>>> "Proxies MAY provide location on behalf of devices if: the device
>>> does
>>> not provide it's own location and the proxy is able to determine
>>> location on-behalf-of the device.
>>
>> How does anyone know if this location OBO by the proxy is good
>> enough for dispatch?
>>
>> I think (and this is just my opinion) that proxies in this situation
>> will be just guessing where the endpoints are...
>>
>>
>>> Any comments and/or questions would be welcome.
>>>
>>> Regards,
>>> --
>>> John Lange
>>> http://www.johnlange.ca
>>>
>>> _______________________________________________
>>> Ecrit mailing list
>>> Ecrit@ietf.org
>>> https://www.ietf.org/mailman/listinfo/ecrit
>>
>> _______________________________________________
>> Ecrit mailing list
>> Ecrit@ietf.org
>> https://www.ietf.org/mailman/listinfo/ecrit
>
> _______________________________________________
> Ecrit mailing list
> Ecrit@ietf.org
> https://www.ietf.org/mailman/listinfo/ecrit
>
>
> =
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> If you have received it in error, please notify the sender
> immediately and delete the original.  Any unauthorized use of
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>


From fmenard@xittelecom.com  Tue Jun  2 15:56:34 2009
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From: =?ISO-8859-1?Q?=22Fran=E7ois_D._M=E9nard=22?= <fmenard@xittelecom.com>
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Subject: Re: [Ecrit] Emergency Call Framework for Canada; Questions on  draft-ietf-ecrit-framework-09
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> It works for any device that is behind a residential gateway.

Not if the key for emergency dispatch is only a public IP, which is =20
what the ILECs are proposing.

Private IP =3D you use the legacy system and order T1s to all 9-1-1 =20
tandems.

> So, unless I am mistaken, your proposal will also require every =20
> single residential gateway to be updated AND, for all DSL that uses =20=

> PPP as opposed to DHCP to be upgraded either to use DHCP or to =20
> support modifications so that a new options is available over PPP, =20
> and supported by the RG.

You can do a DHCP query across a PPPoE session to get an option 99 =20
PIDF-LO, atop an IP address that was already assigned via IPCP.

>
>
> I think that this number is substantially more than the 400,000 =20
> devices you are talking about

Nope. Canada =3D 400,000 nomadic VoIP subs.

> and a massive massive cost in infrastructure upgrade, substantially =20=

> more that the $500m you are talking about.
>

Infrastructure upgrades worth $500M are behind the ILEC proposals in =20
Canada, and that will be a patch that will not even support location =20
aware devices from the get go.

f.


> Cheers
> James
>
>
> -----Original Message-----
> From: "Fran=E7ois D. M=E9nard" [mailto:fmenard@xittelecom.com]
> Sent: Tue 6/2/2009 4:38 PM
> To: Winterbottom, James
> Cc: James M. Polk; ecrit
> Subject: Re: [Ecrit] Emergency Call Framework for Canada;Questions =20
> on  draft-ietf-ecrit-framework-09
>
> James,
>
> The architecture that ILECs are proposing in Canada does not work for
> devices which are not on the public Internet.
>
> It'll be cheaper to upgrade 400,000 ATAs in Canada than to spend 500M$
> on implementation of a non-ECRIT solution.
>
> F.
>
>
>
> On 2-Jun-09, at 5:27 PM, Winterbottom, James wrote:
>
>>
>> How will address the millions of already deployed terminals and
>> routers?
>>
>>
>>
>> -----Original Message-----
>> From: ecrit-bounces@ietf.org on behalf of "Fran=E7ois D. M=E9nard"
>> Sent: Tue 6/2/2009 9:36 AM
>> To: James M. Polk
>> Cc: ecrit
>> Subject: Re: [Ecrit] Emergency Call Framework for Canada;Questions
>> on  draft-ietf-ecrit-framework-09
>>
>>
>> See www.brisenet.net for my proposed architecture.
>>
>> We're currently costing the modification of ISC DHCPD to support
>> Option 99 pass-through of PIDF-LO's  and my ATA vendor is costing the
>> inclusion of DHCP Option 99 & SIP LOCATION CONVEYANCE in their end-
>> points, for submission to the CRTC in August.
>>
>> f.
>>
>>
>> On 1-Jun-09, at 6:01 PM, James M. Polk wrote:
>>
>>> John
>>>
>>> some comments in-line below
>>>
>>> At 02:25 PM 6/1/2009, John Lange wrote:
>>>> On April 15 2009, the Canadian Radio and Telecommunications
>>>> Commission
>>>> (CRTC), which is the Canadian equivalent of the FCC, issued =20
>>>> "Telecom
>>>> Notice of Consultation CRTC 2009-194".
>>>>
>>>> http://www.crtc.gc.ca/eng/archive/2009/2009-194.htm
>>>>
>>>> Paragraph 17 asks; "Are there alternative solutions that would
>>>> improve
>>>> on the current nomadic VoIP 9-1-1 service."
>>>>
>>>> The proposed architecture was developed by Bell Canada based very
>>>> loosely on NENAi2 with extensive modifications. As it was developed
>>>> by
>>>> the ILECs in 2006/2007, it does not employ the IETF standards.
>>>>
>>>> I am working on a submission to this proceeding which advocates the
>>>> implementation of the standards developed by the IETF's ECRIT
>>>> working
>>>> group and it's members. (As a side note, if there are any
>>>> participants
>>>> on this list which are interested in helping with this effort,
>>>> please do
>>>> contact me.)
>>>>
>>>> After examining draft-ietf-ecrit-framework-09 and it's related RFCs
>>>> and
>>>> RFC-drafts, I have some specific questions/concerns which I hope
>>>> this
>>>> list can answer.
>>>>
>>>> The Emergency Call Framework (ECF) as proposed :
>>>>
>>>> - Location is cached at end-point during boot/location discovery =20=

>>>> but
>>>> there does not appear to be any mechanism whereby the end-point
>>>> announces the success of this process to the SIP Registrar.
>>>
>>> This can be done with this specification:
>>> =
http://www.ietf.org/internet-drafts/draft-ietf-sip-location-conveyance-13.=
txt
>>>
>>>
>>>> If the device is able to determine it's location it should relay =20=

>>>> the
>>>> location information to the SIP registration server and the SIP
>>>> registrar should cache this information.
>>>
>>> The registrar caching geolocation is not a protocol issue, it's a
>>> configuration issue (once it receives the location from the
>>> endpoint). Notice this does not have to be with the first REGISTER
>>> request (meaning with a subsequent one), and/or it could be with
>>> each REGISTER request.
>>>
>>>
>>>> This allows the SIP Registrar and SIP proxy the ability to act
>>>> "on-behalf-of" end points that are not able to determine their
>>>> location
>>>> either because they are not location capable, or because they are
>>>> not
>>>> able to determine location from their access provider.
>>>
>>> I'm missing what you mean by the starting "this" in the paragraph
>>> above?
>>>
>>> If the UA has its location, nothing needs to act "on-behalf-
>>> of" (OBO) it when sending location in any SIP request.
>>>
>>>
>>>> Furthermore, it removes the burden of "real-time" "on-behalf-of"
>>>> functionality from the rest of the network.
>>>
>>> If endpoints have their location (your original premise), OBO is
>>> unnecessary -- which further reduces network complexity, no?
>>>
>>>
>>>> The ability of the registrar to query and cache location data for
>>>> endpoints as opposed to the requirement to perform location
>>>> determination in real-time, has a dramatic impact on the technical
>>>> requirements of the overall solution.
>>>
>>> How is this better or easier or an optimization from the endpoint
>>> including its location in the SIP request in the first place?
>>>
>>>
>>>> If location data must be queried in real-time during an actual
>>>> emergency
>>>> event, the network components must be engineered to a much higher
>>>> standard. In some jurisdictions the mandated hardware and network
>>>> requirements will be impacted significantly. No less than redundant
>>>> five-nine hardware running on dedicated private networks will be
>>>> required resulting in higher costs.
>>>
>>> again, all this goes away if the endpoint has its location prior to
>>> placing the emergency call, then including this location information
>>> if more current location information cannot be discovered easily.
>>> Remember, unless you believe that everything needs to be built for
>>> mobile endpoints (i.e., those that actually move from room to room
>>> and from city to city with many times within the same day), being IP
>>> based doesn't mean endpoints move much.  Further, given the fact
>>> that there are lower layer solutions already in place (802.11k and y
>>> and 3GPP) -- the IETF doesn't need to solve everything moving as if
>>> it was never where it is before.  For example, my IP phones at home
>>> haven't moved all day (or all week, or all year, etc) -- therefore
>>> the location value they understand 1 minute ago, as well as a day
>>> ago, and a month ago haven't changed. This makes these locations
>>> valid for call routing and dispatch.
>>>
>>> Mobile nodes that are 3GPP based have their own way of tracking
>>> location changes.
>>>
>>> Mobile nodes that are 802.11 based will likely have a valid location
>>> for call routing at any time during the day, but dispatch could take
>>> a bit longer to determine. The good thing here is that most systems
>>> can determine location within 15 seconds for dispatch -- and I'd
>>> like to meet the dispatchers that can make it to their destination
>>> in time for that to be an issue  ;-)
>>>
>>>
>>>> I submit that a query-and-cache methodology is more in line with =20=

>>>> the
>>>> spirit of other IETF protocols, the DNS system being a prime
>>>> example.
>>>>
>>>> - Concerns with draft-ietf-geopriv-lis-discovery:
>>>>
>>>> The focus of LIS discovery seems to be on local access network
>>>> methods
>>>> such as DHCP and LLDP.
>>>>
>>>> DHCP & LLDP are not good choices for LIS discovery because they are
>>>> not
>>>> supported in the residential market. Residential firewall devices
>>>> are
>>>> not likely to have DHCP/LLDP functionality and the likelihood that
>>>> these
>>>> devices will be replaced or upgraded is small.
>>>
>>> For LLDP, I fully agree with what you have above. I've had 4 ISPs
>>> over the last 10 years, and EACH of them have used DHCP, so I'm not
>>> sure where you get your data wrt DHCP not being supported in the
>>> residential market.
>>>
>>>
>>>> It would therefore seem that the emphasis should be on a LIS
>>>> discovery
>>>> mechanism that does not rely on the local network such as STUN +
>>>> DNS.
>>>
>>> How many vendors in the residential market do you know of that
>>> implement STUN?
>>>
>>> It appears you keep getting back to a solution that requires an
>>> upgrade in the access networks or endpoints.
>>>
>>>
>>>> 1) Device determines its IP address by querying the STUN server.
>>>> 2) Device determines its domain name using reverse DNS.
>>>> 3) Device does LIS discovery via DNS (SRV/NAPTR).
>>>>
>>>> - draft-ietf-ecrit-phonebcp 6.3: "Proxies MAY provide location on
>>>> behalf
>>>> of devices if: The proxy has a relationship with all access
>>>> networks the
>>>> device could connect to".
>>>>
>>>> This wording seems overly restrictive; in effect "all access
>>>> networks
>>>> the device could connect to" amounts to every network on earth =20
>>>> which
>>>> seems like an unreasonably high standard.
>>>>
>>>> How about:
>>>>
>>>> "Proxies MAY provide location on behalf of devices if: the device
>>>> does
>>>> not provide it's own location and the proxy is able to determine
>>>> location on-behalf-of the device.
>>>
>>> How does anyone know if this location OBO by the proxy is good
>>> enough for dispatch?
>>>
>>> I think (and this is just my opinion) that proxies in this situation
>>> will be just guessing where the endpoints are...
>>>
>>>
>>>> Any comments and/or questions would be welcome.
>>>>
>>>> Regards,
>>>> --
>>>> John Lange
>>>> http://www.johnlange.ca
>>>>
>>>> _______________________________________________
>>>> Ecrit mailing list
>>>> Ecrit@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/ecrit
>>>
>>> _______________________________________________
>>> Ecrit mailing list
>>> Ecrit@ietf.org
>>> https://www.ietf.org/mailman/listinfo/ecrit
>>
>> _______________________________________________
>> Ecrit mailing list
>> Ecrit@ietf.org
>> https://www.ietf.org/mailman/listinfo/ecrit
>>
>>
>> =
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>> [mf2]
>>
>
>
>
> =
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> [mf2]
>


From fmenard@xittelecom.com  Tue Jun  2 19:00:10 2009
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From: =?ISO-8859-1?Q?=22Fran=E7ois_D._M=E9nard=22?= <fmenard@xittelecom.com>
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>
> On the topic of privacy; real-time IP location determination is a
> _MASSIVE_ privacy issue that will need to be addressed with public
> policy, not an RFC.

That's a good reason to keep the location in the end-point, where the  
end-point would only reveal it upon requesting S.O.S.

I find that OBO is a _MASSIVE_ violation of privacy.

> Keep in mind that the VOIP provider already has sensitive personal
> information for the user so suffice to say that as long as the
> information is only accessible to authorized people, then exactly who
> those authorized people are is something for the politicians to  
> decide.
>

However, the VOIP provider if access independant (i.e. Vonage atop an  
ISP), has no idea of the location associated with the underlying  
circuit.

The question here is if VONAGE is to steer the call to the right PSAP,  
based upon which information will it be able do that ?


>> "On behalf of" is needed when the device DOESN'T get it's location  
>> from its
>> access network.  I think you have a point on the language of the on  
>> behalf
>> of language in -phonebcp, but your suggestion is not good enough.   
>> The
>> problem to be solved is one way or another we have to get  
>> location.  The
>> current wording is aimed at proxies who think they ought to do it  
>> always,
>> and the language says, fine, as long as you CAN do it always.
>
> Actually, I think BCP would be: "Proxies MUST provide location on  
> behalf
> of devices ONLY if the device does not provide it's own location."

That's a good statement, but it is not sufficiently precise.

The question is 'how can proxies (which are by definition stateless),  
inspect an S.O.S. call and try to look for the presence of a PIDF-LO  
by way of SIP LOCATION CONVEYANCE', and upon that not being there,  
decide to inject it.

This seems like a violation of the mother-rule-of-SIP, which is that  
proxies do not modify SIP message contents, which is where Lby? lies.

Some people are claiming that adding Location-by-reference does not  
violate the rule, however location-by-value would violate the rule.

What's the latest take on that?

> "If the device does not provide location and the proxy can't find
> location OBO the device, then the call MUST be routed to a 3rd party
> call centre for verbal location and routing."

What mechanism will a PROXY use to make this determination?

f.


>
>
> Regards,
> -- 
> John Lange
> http://www.johnlange.ca
>
> _______________________________________________
> Ecrit mailing list
> Ecrit@ietf.org
> https://www.ietf.org/mailman/listinfo/ecrit


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To: "\"\" =?iso-8859-1?Q?Fran=E7ois?= D. =?iso-8859-1?Q?M=E9nard?=  \"\"" <fmenard@xittelecom.com>, John Lange <john@johnlange.ca>
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Cc: ecrit <ecrit@ietf.org>
Subject: Re: [Ecrit] Emergency Call Framework for Canada; Questions on  draft-ietf-ecrit-framework-09
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At 05:36 PM 6/2/2009, "Fran=E7ois D. M=E9nard" wrote:



>>Actually, I think BCP would be: "Proxies MUST provide location on
>>behalf of devices ONLY if the device does not provide it's own location."
>
>That's a good statement, but it is not sufficiently precise.

has anyone ever heard of a default route?

the call only has to be to _A_ PSAP --=20
preferrably in the same country (or=20
state/province or county or city)... The call can=20
be transferred from that PSAP to the appropriate=20
one once the location of the caller is determined=20
(when they tell the dispatcher). This transfer=20
ought be nearly on speed-dial, considering how few PSAPs there are.


>The question is 'how can proxies (which are by definition stateless),

well, this statement is false. Proxies can merely=20
choose to become transaction stateful (because=20
the request and response go through the same=20
proxies), and can inject a Record-Route into a=20
SIP request to becomes dialog stateful. This=20
means all subsequent requests go through this=20
proxy also (all BYEs, REFERs, INFOs...)

>
>inspect an S.O.S. call and try to look for the presence of a PIDF-LO
>by way of SIP LOCATION CONVEYANCE',

well, perhaps all you need to look for is the=20
presence of the Geolocation header, because that=20
has to be present in order for there to be a=20
Location URI or a PIDF-LO message body (i.e.,=20
this header's presence in the SIP request is a=20
dead giveaway that location is not=20
there).  Something can be done upon realizing that header is not present.

>and upon that not being there,
>decide to inject it.
>
>This seems like a violation of the mother-rule-of-SIP, which is that
>proxies do not modify SIP message contents, which is where Lby? lies.

possible correction -- proxies aren't to modify=20
or delete message bodies, but they can certainly=20
add or change the contents of any SIP header,=20
though some aren't recommended to be changed=20
(like Via, From or To, for example).


>Some people are claiming that adding Location-by-reference does not
>violate the rule, however location-by-value would violate the rule.

so long as the SIP server is operating strictly=20
as proxy, but many SIP servers don't limit=20
themselves to only operating as a proxy -- many=20
are B2BUAs and SBCs -- which by definition, *can* modify SIP message bodies.


>What's the latest take on that?

see above

>>"If the device does not provide location and the proxy can't find
>>location OBO the device, then the call MUST be routed to a 3rd party
>>call centre for verbal location and routing."

personally, I think OBO shouldn't be done, given=20
how often I believe this will be incorrect=20
location information, but I've been out-argued on=20
this point. That said, routing to the 3rd party=20
call center (as written above) would be my recommended 2nd step.


>What mechanism will a PROXY use to make this determination?

local configuration, clearly...

even though that won't taste too good to some.=20
it's the way SIP generally operates.


>f.
>
>>Regards,
>>--
>>John Lange
>>http://www.johnlange.ca
>>
>>_______________________________________________
>>Ecrit mailing list
>>Ecrit@ietf.org
>>https://www.ietf.org/mailman/listinfo/ecrit
>
>_______________________________________________
>Ecrit mailing list
>Ecrit@ietf.org
>https://www.ietf.org/mailman/listinfo/ecrit


From john@johnlange.ca  Tue Jun  2 20:22:16 2009
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On Tue, 2009-06-02 at 16:49 -0500, James M. Polk wrote:
> At 04:19 PM 6/2/2009, John Lange wrote:
> >That is why I'm advocating a closer look at something like STUN + DNS
> >for LIS discovery. It will work, allows OBO and requires no new
> >hardware.
> 
> 
> James -- upgrading residential gateways to support (DHCP) Option 99 
> or 123 requires no new hardware either.... (last I checked)

James, you should check again. You need not look any further than your
own company. Ask around and see if Cisco will be providing new firmware
for _all_ of the devices it has ever made including devices from
companies it has purchased such as Linksys and Sipura.

Even if they did, what percentage of users would actually apply the
updates?

Any solution that requires the upgrading of residential gateways is not
feasible.

-- 
John Lange
http://www.johnlange.ca


From john@johnlange.ca  Tue Jun  2 20:30:23 2009
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From: John Lange <john@johnlange.ca>
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Subject: Re: [Ecrit] Emergency Call Framework for Canada; Questions on  draft-ietf-ecrit-framework-09
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On Tue, 2009-06-02 at 17:17 -0500, Winterbottom, James wrote:
> There was one very strong point made in i2 all along, and that is NO
> UPGRADES to residential equipment is required in order for it work. It
> may work better if upgrades are made, but they MUST NOT be required.

I agree completely (even though i2 is not my favourite document). 

Upgrades to RGs MUST NOT be required.

Upgrades to VOIP endpoints is much more feasible since most VOIP
endpoints are already provisioned remotely and receive periodic updates
from their VOIP providers but this MUST NOT be a requirement.

And that is why OBO MUST be a requirement.

> I will also point out that these are the requirements that are
> addressed in the LIS discovery through an RG draft that Martin T is
> authoring.

An excellent document that still needs some work and should... ahem, I
mean MUST ;) be referenced the ecrit-framework and BCP.

-- 
John Lange
http://www.johnlange.ca


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Subject: Re: [Ecrit] Emergency Call Framework for Canada; Questions on  draft-ietf-ecrit-framework-09
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At 10:22 PM 6/2/2009, John Lange wrote:
>On Tue, 2009-06-02 at 16:49 -0500, James M. Polk wrote:
> > At 04:19 PM 6/2/2009, John Lange wrote:
> > >That is why I'm advocating a closer look at something like STUN + DNS
> > >for LIS discovery. It will work, allows OBO and requires no new
> > >hardware.
> >
> >
> > James -- upgrading residential gateways to support (DHCP) Option 99
> > or 123 requires no new hardware either.... (last I checked)
>
>James, you should check again. You need not look any further than your
>own company. Ask around and see if Cisco will be providing new firmware
>for _all_ of the devices it has ever made including devices from
>companies it has purchased such as Linksys and Sipura.
>
>Even if they did, what percentage of users would actually apply the
>updates?
>
>Any solution that requires the upgrading of residential gateways is not
>feasible.

I'm not questioning the idea of the upgrade (in fact, I'm convinced 
it will be required in most instances), just that HW would be 
required. That's all this comment was about...

The question about the likelihood of the upgrade is a very different 
question, which is in and of itself an *interesting* question.


>--
>John Lange
>http://www.johnlange.ca


From rbarnes@bbn.com  Tue Jun  2 22:07:46 2009
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Subject: [Ecrit] [Fwd: New Version Notification for draft-barnes-ecrit-rough-loc-03]
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Just submitted a new version of rough-loc.  Changes are pretty minor, 
mainly related to how to handle civic addresses:
<http://tools.ietf.org/rfcdiff?url2=draft-barnes-ecrit-rough-loc-03.txt>



-------- Original Message --------
Subject: New Version Notification for draft-barnes-ecrit-rough-loc-03
Date: Tue,  2 Jun 2009 20:25:24 -0700 (PDT)
From: IETF I-D Submission Tool <idsubmission@ietf.org>
To: rbarnes@bbn.com
CC: mlepinski@bbn.com


A new version of I-D, draft-barnes-ecrit-rough-loc-03.txt has been 
successfuly submitted by Richard Barnes and posted to the IETF repository.

Filename:	 draft-barnes-ecrit-rough-loc
Revision:	 03
Title:		 Using Imprecise Location for Emergency Context Resolution
Creation_date:	 2009-06-02
WG ID:		 Independent Submission
Number_of_pages: 14

Abstract:
Emergency calling works best when precise location is available for
emergency call routing.  However, there are situations in which a
location provider is unable or unwilling to provide precise location,
yet still wishes to enable subscribers to make emergency calls.  This
document describes the level of location accuracy that providers must
provide to enable emergency call routing.  In addition, we descibe
how emergency services and non-emergency services can be invoked by
an endpoint that does not have access to its precise location.
 



The IETF Secretariat.




From patrik@frobbit.se  Tue Jun  2 22:09:37 2009
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From: =?ISO-8859-1?Q?Patrik_F=E4ltstr=F6m?= <patrik@frobbit.se>
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On 2 jun 2009, at 20.13, John Lange wrote:

> 1) Endpoint location discovery via DHCP is not going to work for
> residential so some other mechanism will need to be employed (and I
> think it should be STUN + DNS).

I think people should be careful with statements of the form "will not  
work for X". Much better to say "will not work in all situations" or  
"will not work if Y". Even "will not work for MANY deployments" is  
dangerous as I claim noone actually know what "many" implies in  
statements like that.

I know network deployments where location by DHCP will work extremely  
well.

I know location by DHCP will not work in some cases, and work in some.

    Patrik


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From hannes.tschofenig@nsn.com  Wed Jun  3 00:55:04 2009
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PROTO Writeup for draft-patel-ecrit-sos-parameter
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

http://tools.ietf.org/html/draft-patel-ecrit-sos-parameter-06


   (1.a)  Who is the Document Shepherd for this document?  Has the
      Document Shepherd personally reviewed this version of the document
      and, in particular, does he or she believe this version is ready
      for forwarding to the IESG for publication?

Hannes Tschofenig is the document shepherd.=20
The document is ready for publication. Cullen Jennings, who is the=20
responsible AD, indicated that an additional review from SIP experts
may be performed.=20

   (1.b)  Has the document had adequate review both from key members of
      the interested community and others?  Does the Document Shepherd
      have any concerns about the depth or breadth of the reviews that
      have been performed?

The document originally came from the 3GPP and was presented to the IETF

because a Standards Track extension to SIP was needed. The document was=20
reviewed by ECRIT working group members and an expert reviewer, namely
Gonzallo Camarillo, was appointed. His review can be found here:=20
http://www.ietf.org/mail-archive/web/ecrit/current/msg06037.html
His comments got addressed in subsequent draft versions.=20

   (1.c)  Does the Document Shepherd have concerns that the document
      needs more review from a particular or broader perspective, e.g.,
      security, operational complexity, someone familiar with AAA,
      internationalization or XML?

No.

   (1.d)  Does the Document Shepherd have any specific concerns or
      issues with this document that the Responsible Area Director
      and/or the IESG should be aware of?  For example, perhaps he or
      she is uncomfortable with certain parts of the document, or has
      concerns whether there really is a need for it.  In any event, if
      the interested community has discussed those issues and has
      indicated that it still wishes to advance the document, detail
      those concerns here.

There are no concerns with the document.

   (1.e)  How solid is the consensus of the interested community behind
      this document?  Does it represent the strong concurrence of a few
      individuals, with others being silent, or does the interested
      community as a whole understand and agree with it?

This document is not a product of the ECRIT working group but required=20
by the 3GPP for their Release 7 emergency services architecture.=20
There are architectural differences between the IETF and the 3GPP=20
emergency services architecture whereby the solution developed in this
document is currenly only needed by the 3GPP.=20

There is, however, consensus within the ECRIT WG to publish the
document.=20

   (1.f)  Has anyone threatened an appeal or otherwise indicated extreme
      discontent?  If so, please summarise the areas of conflict in
      separate email messages to the Responsible Area Director.  (It
      should be in a separate email because this questionnaire is
      entered into the ID Tracker.)

No. There were only questions regarding the overall interworking between

IETF and 3GPP when it comes to work that is of interest for the 3GPP
only
but has to be carried out in the IETF. This relates to the ongoing=20
discussion about the SIP Change Process.=20

   (1.g)  Has the Document Shepherd personally verified that the
      document satisfies all ID nits?  (See
      http://www.ietf.org/ID-Checklist.html and
      http://tools.ietf.org/tools/idnits/).  Boilerplate checks are not
      enough; this check needs to be thorough.  Has the document met all
      formal review criteria it needs to, such as the MIB Doctor, media
      type and URI type reviews?

The ABNF parses with no errors.
Nits have been checked. The errors regarding RFC 2119 boilerplate seem
to
be incorrect.=20

   (1.h)  Has the document split its references into normative and
      informative?  Are there normative references to documents that are
      not ready for advancement or are otherwise in an unclear state?
      If such normative references exist, what is the strategy for their
      completion?  Are there normative references that are downward
      references, as described in [RFC3967]?  If so, list these downward
      references to support the Area Director in the Last Call procedure
      for them [RFC3967].

The references in the document have been split into normative and
informative.=20
Normative references are all stable documents published as RFCs.

   (1.i)  Has the Document Shepherd verified that the document IANA
      consideration section exists and is consistent with the body of
      the document?  If the document specifies protocol extensions, are
      reservations requested in appropriate IANA registries?  Are the
      IANA registries clearly identified?  If the document creates a new
      registry, does it define the proposed initial contents of the
      registry and an allocation procedure for future registrations?
      Does it suggested a reasonable name for the new registry?  See
      [I-D.narten-iana-considerations-rfc2434bis].  If the document
      describes an Expert Review process has Shepherd conferred with the
      Responsible Area Director so that the IESG can appoint the needed
      Expert during the IESG Evaluation?

IANA considerations exist within the document and are consistent with=20
the body of the document. The new URI parameter has been specified as=20
defined by RFC 3261.=20

The document requests IANA to register the URI parameter.

   (1.j)  Has the Document Shepherd verified that sections of the
      document that are written in a formal language, such as XML code,
      BNF rules, MIB definitions, etc., validate correctly in an
      automated checker?

Not applicable.

   (1.k)  The IESG approval announcement includes a Document
      Announcement Write-Up.  Please provide such a Document
      Announcement Writeup?  Recent examples can be found in the
      "Action" announcements for approved documents.  The approval
      announcement contains the following sections:

      Technical Summary

   This document defines a new Session Initiation Protocol (SIP) Uniform
   Resource Identifier (URI) parameter intended for marking SIP
   registration requests related to emergency services.  The usage of
   this new URI parameter complements the usage of the Service Uniform
   Resource Name (URN) and is not intended to replace it.

      Working Group Summary

This document is not the product of a working group. The document was
considered to become an ECRIT working group item. However, based on=20
the current work schedule and the urgency of the document the decision
was made to progress it as an AD sponsored document (initially with=20
Jon Peterson as the AD sponsoring it).=20

      Document Quality

The document has been reviewed by IETF ECRIT WG members and by=20
the 3GPP community. An expert review has been carried out by=20
Gonzalo Camarillo.

The implementation status of this document is unknown.=20

      Personnel

Hannes Tschofenig is the document shepherd for this document. Cullen
Jennings is the responsible AD.=20

From hannes.tschofenig@nsn.com  Wed Jun  3 01:30:17 2009
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Subject: [Ecrit] ECRIT Milestone Update
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Please update the milestones for the ECRIT working group:

----------------------------------

Goals and Milestones:

Done	  	Submit 'Requirements for Emergency Context Resolution
with Internet Technologies' to the IESG for consideration as an
Informational RFC.

Done	  	Submit 'Security Threats and Requirements for Emergency
Call Marking and Mapping' to the IESG for consideration as an
Informational RFC.

Done	  	Submit 'A Uniform Resource Name (URN) for Emergency and
Other Well-Known Services' to the IESG for consideration as a Proposed
Standard.

Done	  	Submit 'LoST: A Location-to-Service Translation
Protocol' to the IESG for consideration as a Proposed Standard.

Done	  	Submit 'Discovering Location-to-Service Translation
(LoST) Servers Using the Dynamic Host Configuration Protocol (DHCP)' to
the IESG for consideration as an Informational RFC.

Done	  	Submit 'Location-to-URL Mapping Architecture and
Framework' to the IESG for consideration as an Informational RFC.

Done     Submit 'Location Hiding: Problem Statement and Requirements' to
the IESG for consideration as an Informational RFC.=20

Done     Submit 'Specifying Holes in LoST Service Boundaries' to the
IESG for consideration as an Informational RFC.=20

Jul 2009 Submit 'Synchronizing Location-to-Service Translation (LoST)
Protocol based Service Boundaries and Mapping Elements' to the IESG for
consideration as an Experimental RFC.=20

Jul 2009	  	Submit 'Framework for Emergency Calling using
Internet Multimedia' to the IESG for consideration as an Informational
RFC.

Jul 2009	  	Submit 'Best Current Practice for Communications
Services in support of Emergency Calling' to the IESG for consideration
as a BCP document

From bernard_aboba@hotmail.com  Wed Jun  3 02:26:28 2009
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John Lange said:

"1) Device determines its IP address by querying the STUN server=20
2) Device determines its domain name using reverse DNS.
3) Device does LIS discovery via DNS (SRV/NAPTR)."

There are some situations in which steps 1 and 2 will not work reliably.=20

With IPv4 exhaustion looming=2C it is likely that service providers will im=
plement some form of IPv4 address sharing. =20

In an access network that has deployed a Carrier Grade NAT (CGN)=2C step 1 =
will produce an IP address on the CGN=2C
not the outer address of the residential CPE.  This could then result in di=
scovery of a LIS on the wrong side
of the CGN=2C which would find itself unable to provide location since the =
source IP address will have been shared=20
by too many users.=20

An alternative approach to obtaining a suitable domain for step 3 would be =
to use the Domain Name Option (RFC 2132)=20
which is commonly supported today.  The Searchlist Option (RFC 3397) is ano=
ther possibility but it is not as=20
widely supported.  This could produce a suitable domain without requiring t=
he implementation of STUN or population
of PTR RRs.=20

 EMAILING FOR THE LESSER EVIL
Join me


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<body class=3D'hmmessage'>
<pre>John Lange said:<br><br>"1) Device determines its IP address by queryi=
ng the STUN server <br>2) Device determines its domain name using reverse D=
NS.<br>3) Device does LIS discovery via DNS (SRV/NAPTR)."<br><br>There are =
some situations in which steps 1 and 2 will not work reliably. <br><br>With=
 IPv4 exhaustion looming=2C it is likely that service providers will implem=
ent some form of IPv4 address sharing.  <br><br>In an access network that h=
as deployed a Carrier Grade NAT (CGN)=2C step 1 will produce an IP address =
on the CGN=2C<br>not the outer address of the residential CPE.  This could =
then result in discovery of a LIS on the wrong side<br>of the CGN=2C which =
would find itself unable to provide location since the source IP address wi=
ll have been shared <br>by too many users. <br><br>An alternative approach =
to obtaining a suitable domain for step 3 would be to use the Domain Name O=
ption (RFC 2132) <br>which is commonly supported today.  The Searchlist Opt=
ion (RFC 3397) is another possibility but it is not as <br>widely supported=
.  This could produce a suitable domain without requiring the implementatio=
n of STUN or population<br>of PTR RRs. <br></pre><br><table style=3D"border=
-top: 1px solid black=3B font-weight: bold=3B font-family: 'Segoe UI'=2CTah=
oma=2Csan-serif=3B"><tbody><tr><td><a href=3D"http://im.live.com/Messenger/=
IM/Home/?source=3DEML_WLHM_GreaterGood" style=3D"font-size: 9pt=3B color: r=
gb(1=2C 132=2C 203)=3B text-decoration: none=3B"><img style=3D"border-style=
: none=3B" src=3D"http://gfx1.hotmail.com/mail/w3/ltr/i_charity.gif" alt=3D=
"i'm"> EMAILING FOR THE LESSER EVIL<br><span style=3D"padding: 0px 24px=3B =
font-size: 8pt=3B color: rgb(63=2C 181=2C 85)=3B text-decoration: underline=
=3B">Join me</span></a></td></tr></tbody></table><br><br></body>
</html>=

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From Ray.Bellis@nominet.org.uk  Wed Jun  3 02:59:03 2009
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Subject: Re: [Ecrit] Emergency Call Framework for Canada; Questions on  draft-ietf-ecrit-framework-09
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Bernard Aboba <bernard_aboba@hotmail.com> wrote:
> John Lange said:
> 
> "1) Device determines its IP address by querying the STUN server 
> 2) Device determines its domain name using reverse DNS.
> 3) Device does LIS discovery via DNS (SRV/NAPTR)."
> 
> There are some situations in which steps 1 and 2 will not work reliably. 

> 
> With IPv4 exhaustion looming, it is likely that service providers 
> will implement some form of IPv4 address sharing. 
> 
> In an access network that has deployed a Carrier Grade NAT (CGN), 
> step 1 will produce an IP address on the CGN, not the outer address
> of the residential CPE.  This could then result in discovery of a LIS
> on the wrong side of the CGN, which would find itself unable to provide
> location since the source IP address will have been shared by too many
> users. 

This shouldn't be a problem.

If the ISP is running a CGN such that the end user cannot find a 
non-RFC1918 public IP address, then all the ISP has to do (per 
draft-thomson-geopriv-res-gw-lis-discovery-01) is provision the 
appropriate NAPTR records in "in-addr.arpa" for whatever private IP space 
they are using. 

Also, draft-winterbottom-geopriv-held-identity-extensions has recently 
been updated to allow queries to be based on the particular IP port 
currently in use.

In other words, if the end user's STUN query returns the CGN's IP address, 
then the LIS that knows about that CGN IP address should be able to 
interrogate the NAT mappings and determine which customer's location is 
being requested.

> An alternative approach to obtaining a suitable domain for step 3 
> would be to use the Domain Name Option (RFC 2132) which is commonly
> supported today.  The Searchlist Option (RFC 3397) is another
> possibility but it is not as widely supported.  This could produce
> a suitable domain without requiring the implementation of STUN or 
population
> of PTR RRs. 

I've argued very strongly on the GeoPriv list against either of those 
options being used.

Using either implies a linkage between the access network and domain names 
which is simply not guaranteed to exist.  IME, neither are well supported 
by residential CPE anyway.

Ray

-- 
Ray Bellis, MA(Oxon) MIET
Senior Researcher in Advanced Projects, Nominet
e: ray@nominet.org.uk, t: +44 1865 332211





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> If the ISP is running a CGN such that the end user cannot find a=20
> non-RFC1918 public IP address=2C then all the ISP has to do (per=20
> draft-thomson-geopriv-res-gw-lis-discovery-01) is provision the=20
> appropriate NAPTR records in "in-addr.arpa" for whatever private IP space=
=20
> they are using.=20

Not sure why NATPR RRs would be put in in-addr.arpa.  If the ISP is
populating RRs in "in-addr.arpa"=2C  couldn't they populate PTR RRs
pointing to a domain within which the SRV/NATPR RRs could be found?=20

> Also=2C draft-winterbottom-geopriv-held-identity-extensions has recently=
=20
> been updated to allow queries to be based on the particular IP port=20
> currently in use.

Good idea.=20

> In other words=2C if the end user's STUN query returns the CGN's IP addre=
ss=2C=20
> then the LIS that knows about that CGN IP address should be able to=20
> interrogate the NAT mappings and determine which customer's location is=20
> being requested.

Is it really a good idea for a LIS to query NAT mappings from a CGN??
I recall a router implementation where there was a facility for=20
retrieving portions of the forwarding table on a backbone router.=20
This didn't work well since the queries chewed up cycles that were needed f=
or
processing of control plane traffic.=20

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&gt=3B If the ISP is running a CGN such that the end user cannot find a <br=
>&gt=3B non-RFC1918 public IP address=2C then all the ISP has to do (per <b=
r>&gt=3B draft-thomson-geopriv-res-gw-lis-discovery-01) is provision the <b=
r>&gt=3B appropriate NAPTR records in "in-addr.arpa" for whatever private I=
P space <br>&gt=3B they are using. <br><br>Not sure why NATPR RRs would be =
put in in-addr.arpa.&nbsp=3B If the ISP is<br>populating RRs in "in-addr.ar=
pa"=2C&nbsp=3B couldn't they populate PTR RRs<br>pointing to a domain withi=
n which the SRV/NATPR RRs could be found? <br><br>&gt=3B Also=2C draft-wint=
erbottom-geopriv-held-identity-extensions has recently <br>&gt=3B been upda=
ted to allow queries to be based on the particular IP port <br>&gt=3B curre=
ntly in use.<br><br>Good idea. <br><br>&gt=3B In other words=2C if the end =
user's STUN query returns the CGN's IP address=2C <br>&gt=3B then the LIS t=
hat knows about that CGN IP address should be able to <br>&gt=3B interrogat=
e the NAT mappings and determine which customer's location is <br>&gt=3B be=
ing requested.<br><br>Is it really a good idea for a LIS to query NAT mappi=
ngs from a CGN??<br>I recall a router implementation where there was a faci=
lity for <br>retrieving portions of the forwarding table on a backbone rout=
er. <br>This didn't work well since the queries chewed up cycles that were =
needed for<br>processing of control plane traffic. <br></body>
</html>=

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Ray,


On 6/3/09 5:58 AM, "Ray.Bellis@nominet.org.uk" <Ray.Bellis@nominet.org.uk>
wrote:

> Bernard Aboba <bernard_aboba@hotmail.com> wrote:
>> John Lange said:
>> 
>> "1) Device determines its IP address by querying the STUN server
>> 2) Device determines its domain name using reverse DNS.
>> 3) Device does LIS discovery via DNS (SRV/NAPTR)."
>> 
>> There are some situations in which steps 1 and 2 will not work reliably.
> 
>> 
>> With IPv4 exhaustion looming, it is likely that service providers
>> will implement some form of IPv4 address sharing.
>> 
>> In an access network that has deployed a Carrier Grade NAT (CGN),
>> step 1 will produce an IP address on the CGN, not the outer address
>> of the residential CPE.  This could then result in discovery of a LIS
>> on the wrong side of the CGN, which would find itself unable to provide
>> location since the source IP address will have been shared by too many
>> users. 
> 
> This shouldn't be a problem.
> 
> If the ISP is running a CGN such that the end user cannot find a
> non-RFC1918 public IP address, then all the ISP has to do (per
> draft-thomson-geopriv-res-gw-lis-discovery-01) is provision the
> appropriate NAPTR records in "in-addr.arpa" for whatever private IP space
> they are using.

Isn't this making assumptions about which DNS resolver the end host is
using?  I don't believe we can assume the end host is using the Access
Provider's resolver.  A common occurrence of bringing up a VPN split-tunnel
can change the resolver a host utilizes, or for some, static resolver
assignments are made.

What am I missing?

-Marc-




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From: "Stark, Barbara" <bs7652@att.com>
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Many retail home routers have been end-of-lifed by their manufacturers.
It is highly unrealistic to expect upgrades to be made available for
these. It is, likewise, unrealistic to expect the average consumer to
know that an upgrade exists (when it does exist) or to know to apply
such an upgrade.

Discovery of the WAN IP address through a mechanism such as STUN, and
then doing a reverse DNS look-up for a LIS server does indeed remain the
best option during the many-year-long transition time frame, for the
case where an end device isn't able to get location info or LIS info via
DHCP.

But I'm fine for the IETF not to document or provide a BCP for that. I
can go elsewhere for refining best practices. Which is why I don't
really care to argue this question anymore. I mainly need the IETF to
provide the basic standards, and the basic framework. Which I think
they're doing a good job at getting around to. If those documents could
just make that final leap to RFC status ...
Barbara

> -----Original Message-----
> From: ecrit-bounces@ietf.org [mailto:ecrit-bounces@ietf.org] On Behalf
> Of James M. Polk
> Sent: Tuesday, June 02, 2009 5:49 PM
> To: John Lange; Brian Rosen
> Cc: 'ecrit'
> Subject: Re: [Ecrit] Emergency Call Framework for Canada; Questions on
> draft-ietf-ecrit-framework-09
>=20
> At 04:19 PM 6/2/2009, John Lange wrote:
> >That is why I'm advocating a closer look at something like STUN + DNS
> >for LIS discovery. It will work, allows OBO and requires no new
> >hardware.
>=20
>=20
> James -- upgrading residential gateways to support (DHCP) Option 99
> or 123 requires no new hardware either.... (last I checked)
>=20
> James
>=20
>=20
> _______________________________________________
> Ecrit mailing list
> Ecrit@ietf.org
> https://www.ietf.org/mailman/listinfo/ecrit

*****

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> Not sure why NATPR RRs would be put in in-addr.arpa.  If the ISP is
> populating RRs in "in-addr.arpa",  couldn't they populate PTR RRs
> pointing to a domain within which the SRV/NATPR RRs could be found? 

They could, but in many cases the choice of the PTR RRs is made by the 
customer.

Using a NAPTR RR allows for separation of the domain name (as used by the 
customer) from the infrastructure (as provided by the ISP).

> > Also, draft-winterbottom-geopriv-held-identity-extensions has recently 

> > been updated to allow queries to be based on the particular IP port 
> > currently in use.
> 
> Good idea. 

Thanks :)
 
> Is it really a good idea for a LIS to query NAT mappings from a CGN??
> I recall a router implementation where there was a facility for 
> retrieving portions of the forwarding table on a backbone router. 
> This didn't work well since the queries chewed up cycles that were 
needed for
> processing of control plane traffic. 

It's probably no worse an idea than CGN itself ;-)

kind regards,

Ray

-- 
Ray Bellis, MA(Oxon) MIET
Senior Researcher in Advanced Projects, Nominet
e: ray@nominet.org.uk, t: +44 1865 332211

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Thread-Topic: [Ecrit] Emergency Call Framework for Canada; Questions on draft-ietf-ecrit-framework-09
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References: <1243884311.17673.212.camel@vandium.darkcore.net>	<XFE-SJC-212NPPzQT450000bbad@xfe-sjc-212.amer.cisco.com>	<1243966386.4449.676.camel@vandium.darkcore.net>	<01d101c9e3b0$d90bfac0$8b23f040$@net><1243977594.4449.813.camel@vandium.darkcore.net><023801c9e3cb$46467a60$d2d36f20$@net> <62E51439-398D-4004-9FDF-B4C41302F505@xittelecom.com>
From: "Stark, Barbara" <bs7652@att.com>
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Cc: ecrit <ecrit@ietf.org>
Subject: Re: [Ecrit] Emergency Call Framework for Canada; Questions on draft-ietf-ecrit-framework-09
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Most service providers do offer plans with multiple addresses, but the =
vast majority of people do not subscribe to these plans. Your service =
provider sounds unique in the world of service providers, to give away 3 =
addresses to all subscribers. Most service providers who utilize PPPoE =
limit (through RADIUS) the number of concurrent PPPoE sessions that are =
allowed to 1. The termination points for PPPoE sessions in the network =
tend to be capacity limited by number of concurrent sessions, so it =
would be a major cost to increase the number of supported PPPoE sessions =
per customer, in a world where those customers were actually expected to =
use those multiple sessions. Also, each PPPoE session requires an IP =
address. Today that's IPv4. As we all know, we're rapidly running out of =
those addresses, and doubling the number of IPv4 addresses used by all =
customer would be a Very Bad Thing.=20

Oh, and help desk costs of helping people to enter PPPoE login password =
in an additional device are significant. Forgotten login/password info =
have historically been one of the largest help desk costs that service =
providers experience. Again, your proposal is a costly proposal.

People who can do the things that you have done in your home network are =
few and far between. You are not average. We must have solutions that =
work for the average person, and not just the special elite people who =
actually understand this stuff.
Barbara

> -----Original Message-----
> From: ecrit-bounces@ietf.org [mailto:ecrit-bounces@ietf.org] On Behalf
> Of "Fran=E7ois D. M=E9nard"
> Sent: Tuesday, June 02, 2009 6:01 PM
> To: Brian Rosen
> Cc: ecrit
> Subject: Re: [Ecrit] Emergency Call Framework for Canada;Questions on
> draft-ietf-ecrit-framework-09
>=20
>=20
> > DHCP works very well in residential VoIP.  The phone may have a =
NATed
> > address, but as long as the home router passes the location option,
> > the
> > query to the provider will have the right thing to get the DHCP
> > system to
> > return the location of the residence.  If you don't like DHCP, use
> > HELD, but
> > you still have some remnants of the VPN problem.  Don't confuse DHCP
> > for LIS
> > discovery with DHCP for location configuration.  Both work, but DHCP
> > discovery of a HELD server works.
> >
>=20
> I concur.
>=20
> If you have a router which does not pass on DHCP Option 99, you can
> always initiate a PPPoE tunnel from your ATA and do a DHCP Option 99
> fetching through it.
>=20
> There is nothing wrong with having multiple PPPoE sessions from your
> home to your ISP, and one dedicated to VoIP.
>=20
> Furthermore, this will be an excellent mean to use PPPoE to prioritize
> the username/password for a VoIP PPPoE session over the username/
> password for Internet access, for two sessions coming from the same
> home.
>=20
> The ATAs we use here can be patched to support DHCP Option 99 fetching
> through a PPPoE session. All you need is to put a little Ethernet
> switch between your DSL modem / Cable Modem and your ATA and to allow
> for the possibility that both your ATA as well as your Router will
> launch a PPPoE tunnel to your ISP.
>=20
> I'll send you a sticker you can can put on your router here... plug
> here and die - this box does not pass on location.
>=20
> This architecture has the added bonus of accelerating the transition
> to IPv6.
>=20
> For those concerned with that, our wholesale cable modem incumbent
> cable operator, permits up to 3 public IPs behind a single cable
> modem, and I use a switch behind my CM to assign a separate public IP
> for my VoIP PBX SIPtrunk client, from the public IP address of my
> router, which currently is too dumb to relay DHCP Option 99.
>=20
> So all I need is to have the DHCP server programmed to send a PIDF-LO.
>=20
> And for my SIP client to support SIP LOCATION CONVEYANCE.
>=20
> And for it not to never send a BYE if I dial 9-1-1, even if I hang-up.
>=20
> F.
>=20
> _______________________________________________
> Ecrit mailing list
> Ecrit@ietf.org
> https://www.ietf.org/mailman/listinfo/ecrit

*****

The information transmitted is intended only for the person or entity to =
which it is addressed and may contain confidential, proprietary, and/or =
privileged material. Any review, retransmission, dissemination or other =
use of, or taking of any action in reliance upon this information by =
persons or entities other than the intended recipient is prohibited. If =
you received this in error, please contact the sender and delete the =
material from all computers. GA625



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Subject: Re: [Ecrit] Emergency Call Framework for Canada; Questions on  draft-ietf-ecrit-framework-09
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> > If the ISP is running a CGN such that the end user cannot find a
> > non-RFC1918 public IP address, then all the ISP has to do (per
> > draft-thomson-geopriv-res-gw-lis-discovery-01) is provision the
> > appropriate NAPTR records in "in-addr.arpa" for whatever private IP 
space
> > they are using.
> 
> Isn't this making assumptions about which DNS resolver the end host is
> using?  I don't believe we can assume the end host is using the Access
> Provider's resolver. 

Good point, that may need some more thought.

In the generic case it's fine, because a public IP would be mapped in the 
public in-addr.arpa zone.

> A common occurrence of bringing up a VPN split-tunnel
> can change the resolver a host utilizes, or for some, static resolver
> assignments are made.

As with other LIS discovery processes, this needs doing before any VPNs 
are established.

Ray


From drage@alcatel-lucent.com  Wed Jun  3 09:21:54 2009
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To: "Tschofenig, Hannes (NSN - FI/Espoo)" <hannes.tschofenig@nsn.com>, Cullen Jennings <fluffy@cisco.com>, "iesg-secretary@ietf.org" <iesg-secretary@ietf.org>
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> The document originally came from the 3GPP and was presented to the IETF=
=20
> because a Standards Track extension to SIP was needed.=20

This is not quite accurate.

The requirement came from 3GPP. The original requirements did get some deta=
iled review in a 3GPP meeting.

A number of participants in 3GPP have worked on the document and reviewed t=
he contents.

The document is used as a normative reference by 3GPP documents, and those =
3GPP documents are in process of implementation by a number of vendors.

However there has been no formal review of the contents within a 3GPP meeti=
ng or other formal 3GPP process, and the document itself has never been a 3=
GPP document.

This does match the process that has been followed on a number of other 3GP=
P dependencies on IETF.

regards

Keith

=20

> -----Original Message-----
> From: ecrit-bounces@ietf.org [mailto:ecrit-bounces@ietf.org]=20
> On Behalf Of Tschofenig, Hannes (NSN - FI/Espoo)
> Sent: Wednesday, June 03, 2009 8:57 AM
> To: Cullen Jennings; iesg-secretary@ietf.org
> Cc: ECRIT
> Subject: [Ecrit] PROTO writeup for draft-patel-ecrit-sos-parameter
>=20
> PROTO Writeup for draft-patel-ecrit-sos-parameter=20
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>=20
> http://tools.ietf.org/html/draft-patel-ecrit-sos-parameter-06
>=20
>=20
>    (1.a)  Who is the Document Shepherd for this document?  Has the
>       Document Shepherd personally reviewed this version of=20
> the document
>       and, in particular, does he or she believe this version is ready
>       for forwarding to the IESG for publication?
>=20
> Hannes Tschofenig is the document shepherd.=20
> The document is ready for publication. Cullen Jennings, who=20
> is the responsible AD, indicated that an additional review=20
> from SIP experts may be performed.=20
>=20
>    (1.b)  Has the document had adequate review both from key=20
> members of
>       the interested community and others?  Does the Document Shepherd
>       have any concerns about the depth or breadth of the reviews that
>       have been performed?
>=20
> The document originally came from the 3GPP and was presented=20
> to the IETF
>=20
> because a Standards Track extension to SIP was needed. The=20
> document was reviewed by ECRIT working group members and an=20
> expert reviewer, namely Gonzallo Camarillo, was appointed.=20
> His review can be found here:=20
> http://www.ietf.org/mail-archive/web/ecrit/current/msg06037.html
> His comments got addressed in subsequent draft versions.=20
>=20
>    (1.c)  Does the Document Shepherd have concerns that the document
>       needs more review from a particular or broader=20
> perspective, e.g.,
>       security, operational complexity, someone familiar with AAA,
>       internationalization or XML?
>=20
> No.
>=20
>    (1.d)  Does the Document Shepherd have any specific concerns or
>       issues with this document that the Responsible Area Director
>       and/or the IESG should be aware of?  For example, perhaps he or
>       she is uncomfortable with certain parts of the document, or has
>       concerns whether there really is a need for it.  In any=20
> event, if
>       the interested community has discussed those issues and has
>       indicated that it still wishes to advance the document, detail
>       those concerns here.
>=20
> There are no concerns with the document.
>=20
>    (1.e)  How solid is the consensus of the interested=20
> community behind
>       this document?  Does it represent the strong=20
> concurrence of a few
>       individuals, with others being silent, or does the interested
>       community as a whole understand and agree with it?
>=20
> This document is not a product of the ECRIT working group but=20
> required by the 3GPP for their Release 7 emergency services=20
> architecture.=20
> There are architectural differences between the IETF and the=20
> 3GPP emergency services architecture whereby the solution=20
> developed in this document is currenly only needed by the 3GPP.=20
>=20
> There is, however, consensus within the ECRIT WG to publish=20
> the document.=20
>=20
>    (1.f)  Has anyone threatened an appeal or otherwise=20
> indicated extreme
>       discontent?  If so, please summarise the areas of conflict in
>       separate email messages to the Responsible Area Director.  (It
>       should be in a separate email because this questionnaire is
>       entered into the ID Tracker.)
>=20
> No. There were only questions regarding the overall=20
> interworking between
>=20
> IETF and 3GPP when it comes to work that is of interest for=20
> the 3GPP only but has to be carried out in the IETF. This=20
> relates to the ongoing discussion about the SIP Change Process.=20
>=20
>    (1.g)  Has the Document Shepherd personally verified that the
>       document satisfies all ID nits?  (See
>       http://www.ietf.org/ID-Checklist.html and
>       http://tools.ietf.org/tools/idnits/).  Boilerplate=20
> checks are not
>       enough; this check needs to be thorough.  Has the=20
> document met all
>       formal review criteria it needs to, such as the MIB=20
> Doctor, media
>       type and URI type reviews?
>=20
> The ABNF parses with no errors.
> Nits have been checked. The errors regarding RFC 2119=20
> boilerplate seem to be incorrect.=20
>=20
>    (1.h)  Has the document split its references into normative and
>       informative?  Are there normative references to=20
> documents that are
>       not ready for advancement or are otherwise in an unclear state?
>       If such normative references exist, what is the=20
> strategy for their
>       completion?  Are there normative references that are downward
>       references, as described in [RFC3967]?  If so, list=20
> these downward
>       references to support the Area Director in the Last=20
> Call procedure
>       for them [RFC3967].
>=20
> The references in the document have been split into normative=20
> and informative.=20
> Normative references are all stable documents published as RFCs.
>=20
>    (1.i)  Has the Document Shepherd verified that the document IANA
>       consideration section exists and is consistent with the body of
>       the document?  If the document specifies protocol=20
> extensions, are
>       reservations requested in appropriate IANA registries?  Are the
>       IANA registries clearly identified?  If the document=20
> creates a new
>       registry, does it define the proposed initial contents of the
>       registry and an allocation procedure for future registrations?
>       Does it suggested a reasonable name for the new registry?  See
>       [I-D.narten-iana-considerations-rfc2434bis].  If the document
>       describes an Expert Review process has Shepherd=20
> conferred with the
>       Responsible Area Director so that the IESG can appoint=20
> the needed
>       Expert during the IESG Evaluation?
>=20
> IANA considerations exist within the document and are=20
> consistent with the body of the document. The new URI=20
> parameter has been specified as defined by RFC 3261.=20
>=20
> The document requests IANA to register the URI parameter.
>=20
>    (1.j)  Has the Document Shepherd verified that sections of the
>       document that are written in a formal language, such as=20
> XML code,
>       BNF rules, MIB definitions, etc., validate correctly in an
>       automated checker?
>=20
> Not applicable.
>=20
>    (1.k)  The IESG approval announcement includes a Document
>       Announcement Write-Up.  Please provide such a Document
>       Announcement Writeup?  Recent examples can be found in the
>       "Action" announcements for approved documents.  The approval
>       announcement contains the following sections:
>=20
>       Technical Summary
>=20
>    This document defines a new Session Initiation Protocol=20
> (SIP) Uniform
>    Resource Identifier (URI) parameter intended for marking SIP
>    registration requests related to emergency services.  The usage of
>    this new URI parameter complements the usage of the Service Uniform
>    Resource Name (URN) and is not intended to replace it.
>=20
>       Working Group Summary
>=20
> This document is not the product of a working group. The=20
> document was considered to become an ECRIT working group=20
> item. However, based on the current work schedule and the=20
> urgency of the document the decision was made to progress it=20
> as an AD sponsored document (initially with Jon Peterson as=20
> the AD sponsoring it).=20
>=20
>       Document Quality
>=20
> The document has been reviewed by IETF ECRIT WG members and=20
> by the 3GPP community. An expert review has been carried out=20
> by Gonzalo Camarillo.
>=20
> The implementation status of this document is unknown.=20
>=20
>       Personnel
>=20
> Hannes Tschofenig is the document shepherd for this document.=20
> Cullen Jennings is the responsible AD.=20
> _______________________________________________
> Ecrit mailing list
> Ecrit@ietf.org
> https://www.ietf.org/mailman/listinfo/ecrit
> =

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Subject: Re: [Ecrit] ECRIT Milestone Update
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Hannes

Why do you continue to ignore the "esnet" Resource-Priority namespace 
ID in the milestones.
http://www.ietf.org/internet-drafts/draft-ietf-ecrit-local-emergency-rph-namespace-03.txt

This became a WG item more than a year ago, and you stated the last 
time I pointed this omission out that you were in error.

James

At 03:32 AM 6/3/2009, Tschofenig, Hannes (NSN - FI/Espoo) wrote:
>Please update the milestones for the ECRIT working group:
>
>----------------------------------
>
>Goals and Milestones:
>
>Done            Submit 'Requirements for Emergency Context Resolution
>with Internet Technologies' to the IESG for consideration as an
>Informational RFC.
>
>Done            Submit 'Security Threats and Requirements for Emergency
>Call Marking and Mapping' to the IESG for consideration as an
>Informational RFC.
>
>Done            Submit 'A Uniform Resource Name (URN) for Emergency and
>Other Well-Known Services' to the IESG for consideration as a Proposed
>Standard.
>
>Done            Submit 'LoST: A Location-to-Service Translation
>Protocol' to the IESG for consideration as a Proposed Standard.
>
>Done            Submit 'Discovering Location-to-Service Translation
>(LoST) Servers Using the Dynamic Host Configuration Protocol (DHCP)' to
>the IESG for consideration as an Informational RFC.
>
>Done            Submit 'Location-to-URL Mapping Architecture and
>Framework' to the IESG for consideration as an Informational RFC.
>
>Done     Submit 'Location Hiding: Problem Statement and Requirements' to
>the IESG for consideration as an Informational RFC.
>
>Done     Submit 'Specifying Holes in LoST Service Boundaries' to the
>IESG for consideration as an Informational RFC.
>
>Jul 2009 Submit 'Synchronizing Location-to-Service Translation (LoST)
>Protocol based Service Boundaries and Mapping Elements' to the IESG for
>consideration as an Experimental RFC.
>
>Jul 2009                Submit 'Framework for Emergency Calling using
>Internet Multimedia' to the IESG for consideration as an Informational
>RFC.
>
>Jul 2009                Submit 'Best Current Practice for Communications
>Services in support of Emergency Calling' to the IESG for consideration
>as a BCP document
>_______________________________________________
>Ecrit mailing list
>Ecrit@ietf.org
>https://www.ietf.org/mailman/listinfo/ecrit


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From: "Stark, Barbara" <bs7652@att.com>
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Going back to respond to John's original email...

John,
2. I agree with your LIS discovery issues regarding legacy home routers
with NAT. However, solving this does not require new protocols;
therefore, I've decided to not object to the current lis-discovery
document proceeding as it is. The DHCP options for LIS discovery are
needed for the long-term. Getting end VoIP devices to use STUN and do
reverse DNS can be handled separately, either with the IETF (e.g.,
Martin's res-gw-lis-discovery document) or external to the IETF.

3. As for recommended proxy on-behalf-of behavior, the current wording
doesn't bother me, although your alternate wording is also fine. It
doesn't bother me, because it doesn't change the requirements on the end
devices, access nodes, or access networks. Those are the things that
have to be very predictable in their behavior, if this architecture is
to ultimately succeed. If I were to feel that a proxy under my control
should try to get locations, and if such behavior were consistent with
the regulatory environment my proxy operated in, then I would have it do
just that, no matter how phonebcp is worded.

1. Your suggestion that the device tell its location to its SIP
registrar causes me some difficulty. In this case, the device already
has its location, so it should also have its PSAP route info. If the
device has location and emergency routing info, then the SIP registrar
and VSP should just be able to dumbly route. Even if they don't
recognize it as an emergency call, they should still be able to route.
If the device can't update its location, it will use its locally cached
information -- so having the VSP cache this exact same location info
would be redundant. Having VSPs that operate inside a country do certain
things to ease the transition, like querying location on behalf of
location-less devices, is fine, if that's what's desired. Building
dependencies on VSP behavior is bad. You don't know where in the world
the VSP will be. You don't even know if the "VSP" is nothing more than
an Asterix PBX in someone's basement. And there's no need for the
emergency call to fail, just because the VSP is foreign. That's part of
the beauty of the current architecture -- it's independent of VSP
nationality. The device, the access network, and the desired PSAP are
usually (not always, in border scenarios) inside the same country. The
VSP (registrar) is anywhere.
Barbara

> -----Original Message-----
> From: ecrit-bounces@ietf.org [mailto:ecrit-bounces@ietf.org] On Behalf
> Of John Lange
> Sent: Monday, June 01, 2009 3:25 PM
> To: ecrit
> Subject: [Ecrit] Emergency Call Framework for Canada; Questions on
> draft-ietf-ecrit-framework-09
>=20
> On April 15 2009, the Canadian Radio and Telecommunications Commission
> (CRTC), which is the Canadian equivalent of the FCC, issued "Telecom
> Notice of Consultation CRTC 2009-194".
>=20
> http://www.crtc.gc.ca/eng/archive/2009/2009-194.htm
>=20
> Paragraph 17 asks; "Are there alternative solutions that would improve
> on the current nomadic VoIP 9-1-1 service."
>=20
> The proposed architecture was developed by Bell Canada based very
> loosely on NENAi2 with extensive modifications. As it was developed by
> the ILECs in 2006/2007, it does not employ the IETF standards.
>=20
> I am working on a submission to this proceeding which advocates the
> implementation of the standards developed by the IETF's ECRIT working
> group and it's members. (As a side note, if there are any participants
> on this list which are interested in helping with this effort, please
> do
> contact me.)
>=20
> After examining draft-ietf-ecrit-framework-09 and it's related RFCs
and
> RFC-drafts, I have some specific questions/concerns which I hope this
> list can answer.
>=20
> The Emergency Call Framework (ECF) as proposed :
>=20
> - Location is cached at end-point during boot/location discovery but
> there does not appear to be any mechanism whereby the end-point
> announces the success of this process to the SIP Registrar.
>=20
> If the device is able to determine it's location it should relay the
> location information to the SIP registration server and the SIP
> registrar should cache this information.
>=20
> This allows the SIP Registrar and SIP proxy the ability to act
> "on-behalf-of" end points that are not able to determine their
location
> either because they are not location capable, or because they are not
> able to determine location from their access provider.
>=20
> Furthermore, it removes the burden of "real-time" "on-behalf-of"
> functionality from the rest of the network.
>=20
> The ability of the registrar to query and cache location data for
> endpoints as opposed to the requirement to perform location
> determination in real-time, has a dramatic impact on the technical
> requirements of the overall solution.
>=20
> If location data must be queried in real-time during an actual
> emergency
> event, the network components must be engineered to a much higher
> standard. In some jurisdictions the mandated hardware and network
> requirements will be impacted significantly. No less than redundant
> five-nine hardware running on dedicated private networks will be
> required resulting in higher costs.
>=20
> I submit that a query-and-cache methodology is more in line with the
> spirit of other IETF protocols, the DNS system being a prime example.
>=20
> - Concerns with draft-ietf-geopriv-lis-discovery:
>=20
> The focus of LIS discovery seems to be on local access network methods
> such as DHCP and LLDP.
>=20
> DHCP & LLDP are not good choices for LIS discovery because they are
not
> supported in the residential market. Residential firewall devices are
> not likely to have DHCP/LLDP functionality and the likelihood that
> these
> devices will be replaced or upgraded is small.
>=20
> It would therefore seem that the emphasis should be on a LIS discovery
> mechanism that does not rely on the local network such as STUN + DNS.
>=20
> 1) Device determines its IP address by querying the STUN server.
> 2) Device determines its domain name using reverse DNS.
> 3) Device does LIS discovery via DNS (SRV/NAPTR).
>=20
> - draft-ietf-ecrit-phonebcp 6.3: "Proxies MAY provide location on
> behalf
> of devices if: The proxy has a relationship with all access networks
> the
> device could connect to".
>=20
> This wording seems overly restrictive; in effect "all access networks
> the device could connect to" amounts to every network on earth which
> seems like an unreasonably high standard.
>=20
> How about:
>=20
> "Proxies MAY provide location on behalf of devices if: the device does
> not provide it's own location and the proxy is able to determine
> location on-behalf-of the device.
>=20
> Any comments and/or questions would be welcome.
>=20
> Regards,
> --
> John Lange
> http://www.johnlange.ca
>=20
> _______________________________________________
> Ecrit mailing list
> Ecrit@ietf.org
> https://www.ietf.org/mailman/listinfo/ecrit

*****

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From john@johnlange.ca  Wed Jun  3 11:53:00 2009
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On Tue, 2009-06-02 at 17:44 -0400, Brian Rosen wrote:
> We're trying to define real world solutions.  We may fail, but we're trying.

The work ecrit has done on this issue is exemplary. Much better than
previous attempts (i2).

However, as James Winterbottom pointed out, "There was one very strong
point made in i2 all along, and that is NO UPGRADES to residential
equipment is required in order for it work."

So i2 might be dead, but the various groups that represent PSAPs in the
US and Canada have made this a clear requirement. So, even if you
completely disagree with the need for equipment replacement, the
parameters have already been set.

> OBO doesn't always work, because by the time a call gets to a VoIP provider,
> it's IP address can be obscured by VPNs.  It doesn't work because the
> regulator can't force connections between a service provider it doesn't have
> jurisdiction over to an access network (which it probably always has
> jurisdiction over, because it's always local).

>   The easy example is my
> famous "Sierra Leone VoIP Services Pty" provider serving a customer at a
> Starbucks in, say, Calgary.  You can scream all you want, but CRTC can't
> tell SLVS to connect to Rogers Cable.

Your example clearly identifies the divide between a
technical+regulatory solution and a strictly technical one.

In the above example, technically it may not work but from a regulatory
perspective it does work. It works because the CRTC doesn't care if the
SLVS user can reach 911 from his laptop in a Calgary Starbucks. SLVS is
not regulated by the CRTC and therefore users of SLVS are not required
to have access to 911.

To be clear, the CRTC only requires that customers of Canadian VOIP
providers have access to 911 while in Canada.

Conversely, Canadians using their devices while outside of Canada _MUST
NOT_ have access to a Canadian PSAP (i.e. create nuisance calls). It's
the opposite of what some might think.

If the SLVS regulator wants to dictate that SLVS customers have access
to 911 (or whatever) everyplace on earth, then I say good luck with
that.

> On the other hand, the device can get location from the hotspot in
> Starbucks, who can pass it through SLVS on it's way to the Calgary PSAP.

On the one hand you've argued that anything based on a public IP won't
work because the CRTC doesn't have jurisdiction over SLVS, but on the
other hand you've ignored that very same regulatory restriction by
assuming that SLVS will have a relationship with a Calgary PSAP.

This is not the case. I can positively assure you that the Calgary PSAP
will not accept calls from any VOIP provider that it does not have a
prior relationship with and for the foreseeable future that means VOIP
providers inside Canada.

PSAPs are _very_ sensitive to nuisance calls so the concept that the
PSAP/ESRP will be open to any IP address in the entire world... no.

And as you already pointed out, there can't be a regulatory requirement
for this because the CRTC has no jurisdiction to require a relationship
with SLVS. (as a side note; the CRTC actually has no jurisdiction over
PSAPs what-so-ever but PSAPs will likely go along with the CRTC
decision).

So, if I understand the position of this group, solutions that require
relationships between VOIP providers, ISPs, and PSAPs are not considered
viable because they require regulatory authority over all three parties
everyplace on earth which is impossible.

But the reality is, regulators only care about their own jurisdictions
and they DO have authority to order relationships between all three
parties.

>From the standpoint of the VOIP provider, the PSAP, the ISP and the
regulator, the fact that a given solution might not work if one of the
three parties is outside the jurisdiction of the regulator is
irrelevant.

> OBO is usually aimed at transition: before we get the devices all upgraded,
> what do we do.  In that environment, we may not be able to get location
> every time, although I think the VPN problem is so prevalent that it's going
> to fail too often.  I'm still in favor of trying to get OBO to work, for
> transition only, and with the caveat that it may not always work.

That is a very reasonable position and one I fully support. OBO must be
implemented even though it won't work 100% of the time.

> DHCP works very well in residential VoIP.  The phone may have a NATed
> address, but as long as the home router passes the location option,

Ok, full stop here... A couple of messages on this list have made this
point without providing any technical explanation.

What I don't understand is how this will be done without upgrading or
replacing residential firewalls?

It's like saying "it's easy to get to the moon provided we shut off the
earth's gravity."

> If you don't like DHCP, use HELD,

I'm advocating using HELD, but first you have to discover the LIS so you
can do the HELD query. That's why we need STUN + DNS for LIS discovery
on endpoints and DNS LIS discovery for OBO.

>  but you still have some remnants of the VPN problem.

Again, there is a split here between the regulatory and technical. The
vast majority of users doing VOIP over VPN are "dialing-in" to corporate
VOIP servers. There is no regulatory requirement to provide location for
corporate users. It may well become a regulatory requirement in the
future but nobody has even raised it yet. Given that we're still
struggling with residential, it's safe to say that any such requirement
is several years off so holding up everything on that requirement isn't
necessary.

That being said, the technical solution is for the provider (in this
case the corporation) to provide the LIS and by forming a relationship
between the VPN tunnel and the enterprise LIS so that the LIS knows to
query an external LIS for location based on the public IP, not the
WAN/VPN IP.

>   Don't confuse DHCP for LIS
> discovery with DHCP for location configuration.  Both work, but DHCP
> discovery of a HELD server works.

Again, I fundamentally disagree with this statement because it leaves
out the phrase "provided we upgrade and/or replace most every
residential firewall device currently in service."

> I've stayed out of most of the LIS discovery discussions because I don't
> seem to have much to offer.  I'll let others reply to STUN + Reverse lookup
> + SRV. It's been discussed many times.

On this list? I went through a fair portion of the list archives and
can't find anything. And "google: ecrit stun" turns up nothing from this
group.

---

The comment by Barbra Stark is quite telling; "But I'm fine for the IETF
not to document or provide a BCP for that. I can go elsewhere for
refining best practices. Which is why I don't really care to argue this
question anymore."

With apologies to Barbra for putting words in her mouth; "The BCP
developed by this group ignores reality. I'll go elsewhere for for BCP".

I get the impression that this has been argued many times in the past so
I guess it's just my turn to stir up the pot ;)

The framework document I'm developing for submission to my regulator
will not follow ecrit-framework or ecript-phonebcp (though it will be
based on it) for all of the reasons that I've made apparent on this
list.

However, the framework would be stronger if it did follow ecrit and
likewise, ecrit-framework and ecrit-phonebcp would be stronger if they
could demonstrate success in the marketplace.

-- 
John Lange
http://www.johnlange.ca


From Gabor.Bajko@nokia.com  Wed Jun  3 11:59:45 2009
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From: <Gabor.Bajko@nokia.com>
To: <ecrit@ietf.org>
Date: Wed, 3 Jun 2009 20:59:18 +0200
Thread-Topic: PhoneBCP again
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Subject: [Ecrit] PhoneBCP again
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In today's Interim conf call Brian mentioned that all reasonable suggestion=
s were incorporated into PhoneBCP. I sent a while ago a suggestion to the l=
ist to revise the abstract instead of including an applicability statement.

From:

"The IETF and other standards organization have efforts targeted at
   standardizing various aspects of placing emergency calls on IP
   networks.  This memo describes best current practice on how devices,
   networks and services should use such standards to make emergency
   calls."

To:

"The IETF efforts are targeted at
   standardizing various aspects of placing emergency calls over the Intern=
et.  This memo describes requirements for devices, networks and services th=
at should be supported in order to make emergency calls over the Internet."

The suggestion was ignored (maybe it was not reasonable at that time), but =
since today there were discussions around this aspect, I thought it may wor=
th resending it.=20

- Gabor=

From Hannes.Tschofenig@gmx.net  Wed Jun  3 12:04:34 2009
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Cc: 'ECRIT' <ecrit@ietf.org>, 'Robert Sparks' <rjsparks@nostrum.com>
Subject: Re: [Ecrit] ECRIT Milestone Update
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Hi James, 

I hope that this issue got clarified during the conference call. 
This has nothing todo with me.

Ciao
Hannes
 

>-----Original Message-----
>From: ecrit-bounces@ietf.org [mailto:ecrit-bounces@ietf.org] 
>On Behalf Of James M. Polk
>Sent: 03 June, 2009 19:58
>To: Tschofenig, Hannes (NSN - FI/Espoo); iesg-secretary@ietf.org
>Cc: ECRIT; Robert Sparks
>Subject: Re: [Ecrit] ECRIT Milestone Update
>
>Hannes
>
>Why do you continue to ignore the "esnet" Resource-Priority 
>namespace ID in the milestones.
>http://www.ietf.org/internet-drafts/draft-ietf-ecrit-local-emer
>gency-rph-namespace-03.txt
>
>This became a WG item more than a year ago, and you stated the 
>last time I pointed this omission out that you were in error.
>
>James
>
>At 03:32 AM 6/3/2009, Tschofenig, Hannes (NSN - FI/Espoo) wrote:
>>Please update the milestones for the ECRIT working group:
>>
>>----------------------------------
>>
>>Goals and Milestones:
>>
>>Done            Submit 'Requirements for Emergency Context Resolution
>>with Internet Technologies' to the IESG for consideration as an 
>>Informational RFC.
>>
>>Done            Submit 'Security Threats and Requirements for 
>Emergency
>>Call Marking and Mapping' to the IESG for consideration as an 
>>Informational RFC.
>>
>>Done            Submit 'A Uniform Resource Name (URN) for 
>Emergency and
>>Other Well-Known Services' to the IESG for consideration as a 
>Proposed 
>>Standard.
>>
>>Done            Submit 'LoST: A Location-to-Service Translation
>>Protocol' to the IESG for consideration as a Proposed Standard.
>>
>>Done            Submit 'Discovering Location-to-Service Translation
>>(LoST) Servers Using the Dynamic Host Configuration Protocol 
>(DHCP)' to 
>>the IESG for consideration as an Informational RFC.
>>
>>Done            Submit 'Location-to-URL Mapping Architecture and
>>Framework' to the IESG for consideration as an Informational RFC.
>>
>>Done     Submit 'Location Hiding: Problem Statement and 
>Requirements' to
>>the IESG for consideration as an Informational RFC.
>>
>>Done     Submit 'Specifying Holes in LoST Service Boundaries' to the
>>IESG for consideration as an Informational RFC.
>>
>>Jul 2009 Submit 'Synchronizing Location-to-Service Translation (LoST) 
>>Protocol based Service Boundaries and Mapping Elements' to 
>the IESG for 
>>consideration as an Experimental RFC.
>>
>>Jul 2009                Submit 'Framework for Emergency Calling using
>>Internet Multimedia' to the IESG for consideration as an 
>Informational 
>>RFC.
>>
>>Jul 2009                Submit 'Best Current Practice for 
>Communications
>>Services in support of Emergency Calling' to the IESG for 
>consideration 
>>as a BCP document _______________________________________________
>>Ecrit mailing list
>>Ecrit@ietf.org
>>https://www.ietf.org/mailman/listinfo/ecrit
>
>_______________________________________________
>Ecrit mailing list
>Ecrit@ietf.org
>https://www.ietf.org/mailman/listinfo/ecrit
>


From br@brianrosen.net  Wed Jun  3 12:07:01 2009
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If this is helpful to resolving the disagreement we are having, I am not
opposed to the change.  It does have the unfortunate change from "best
current practice" to "requirements" which is a problem.

Brian

> -----Original Message-----
> From: ecrit-bounces@ietf.org [mailto:ecrit-bounces@ietf.org] On Behalf
> Of Gabor.Bajko@nokia.com
> Sent: Wednesday, June 03, 2009 2:59 PM
> To: ecrit@ietf.org
> Subject: [Ecrit] PhoneBCP again
> 
> In today's Interim conf call Brian mentioned that all reasonable
> suggestions were incorporated into PhoneBCP. I sent a while ago a
> suggestion to the list to revise the abstract instead of including an
> applicability statement.
> 
> From:
> 
> "The IETF and other standards organization have efforts targeted at
>    standardizing various aspects of placing emergency calls on IP
>    networks.  This memo describes best current practice on how devices,
>    networks and services should use such standards to make emergency
>    calls."
> 
> To:
> 
> "The IETF efforts are targeted at
>    standardizing various aspects of placing emergency calls over the
> Internet.  This memo describes requirements for devices, networks and
> services that should be supported in order to make emergency calls over
> the Internet."
> 
> The suggestion was ignored (maybe it was not reasonable at that time),
> but since today there were discussions around this aspect, I thought it
> may worth resending it.
> 
> - Gabor
> _______________________________________________
> Ecrit mailing list
> Ecrit@ietf.org
> https://www.ietf.org/mailman/listinfo/ecrit


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Subject: Re: [Ecrit] Emergency Call Framework for Canada; Questions on  draft-ietf-ecrit-framework-09
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At 01:52 PM 6/3/2009, John Lange wrote:
>On Tue, 2009-06-02 at 17:44 -0400, Brian Rosen wrote:
> > We're trying to define real world solutions.  We may fail, but 
> we're trying.
>
>The work ecrit has done on this issue is exemplary. Much better than
>previous attempts (i2).
>
>However, as James Winterbottom pointed out, "There was one very strong
>point made in i2 all along, and that is NO UPGRADES to residential
>equipment is required in order for it work."
>
>So i2 might be dead, but the various groups that represent PSAPs in the
>US and Canada have made this a clear requirement. So, even if you
>completely disagree with the need for equipment replacement, the
>parameters have already been set.

one the one hand you say "i2 might be dead", and on the other hand 
you mean "we need to remain constrained by the i2 limitations".

this is interesting considering i2 didn't change anything in the 
PSAP, so why are PSAPs involved in making this requirement when they 
get to "stay in the past" with anything the IETF moves forward with?

I'm confused.

Further, in the same meeting (in 2003 in Atlanta, that I was in 
attendance of) - both the i2 and i3 WGs were formed within 
NENA.  Nothing was in stone yet wrt the architecture of either, other 
than i3 was IP e2e, including into the PSAP (i.e., to the call-taker's phone).

Thus, PSAPs have been aware of i2 for as long as they have been aware 
of i3.  Why are they able to dictate i2 rules upon the i3 solution?

i3, from the beginning, was to be built on the idea that location 
would be sent from the calling phone. This means "the residential 
phone and its network" must be changed to support IP, and all that IP 
brings to the table.

Now you are saying the RG cannot be changed for i3?

BTW - I was co-chair of i3 with Brian for the first year...


> > OBO doesn't always work, because by the time a call gets to a 
> VoIP provider,
> > it's IP address can be obscured by VPNs.  It doesn't work because the
> > regulator can't force connections between a service provider it 
> doesn't have
> > jurisdiction over to an access network (which it probably always has
> > jurisdiction over, because it's always local).
>
> >   The easy example is my
> > famous "Sierra Leone VoIP Services Pty" provider serving a customer at a
> > Starbucks in, say, Calgary.  You can scream all you want, but CRTC can't
> > tell SLVS to connect to Rogers Cable.
>
>Your example clearly identifies the divide between a
>technical+regulatory solution and a strictly technical one.
>
>In the above example, technically it may not work but from a regulatory
>perspective it does work. It works because the CRTC doesn't care if the
>SLVS user can reach 911 from his laptop in a Calgary Starbucks. SLVS is
>not regulated by the CRTC and therefore users of SLVS are not required
>to have access to 911.
>
>To be clear, the CRTC only requires that customers of Canadian VOIP
>providers have access to 911 while in Canada.
>
>Conversely, Canadians using their devices while outside of Canada _MUST
>NOT_ have access to a Canadian PSAP (i.e. create nuisance calls). It's
>the opposite of what some might think.
>
>If the SLVS regulator wants to dictate that SLVS customers have access
>to 911 (or whatever) everyplace on earth, then I say good luck with
>that.
>
> > On the other hand, the device can get location from the hotspot in
> > Starbucks, who can pass it through SLVS on it's way to the Calgary PSAP.
>
>On the one hand you've argued that anything based on a public IP won't
>work because the CRTC doesn't have jurisdiction over SLVS, but on the
>other hand you've ignored that very same regulatory restriction by
>assuming that SLVS will have a relationship with a Calgary PSAP.
>
>This is not the case. I can positively assure you that the Calgary PSAP
>will not accept calls from any VOIP provider that it does not have a
>prior relationship with and for the foreseeable future that means VOIP
>providers inside Canada.
>
>PSAPs are _very_ sensitive to nuisance calls so the concept that the
>PSAP/ESRP will be open to any IP address in the entire world... no.
>
>And as you already pointed out, there can't be a regulatory requirement
>for this because the CRTC has no jurisdiction to require a relationship
>with SLVS. (as a side note; the CRTC actually has no jurisdiction over
>PSAPs what-so-ever but PSAPs will likely go along with the CRTC
>decision).
>
>So, if I understand the position of this group, solutions that require
>relationships between VOIP providers, ISPs, and PSAPs are not considered
>viable because they require regulatory authority over all three parties
>everyplace on earth which is impossible.
>
>But the reality is, regulators only care about their own jurisdictions
>and they DO have authority to order relationships between all three
>parties.
>
> >From the standpoint of the VOIP provider, the PSAP, the ISP and the
>regulator, the fact that a given solution might not work if one of the
>three parties is outside the jurisdiction of the regulator is
>irrelevant.
>
> > OBO is usually aimed at transition: before we get the devices all upgraded,
> > what do we do.  In that environment, we may not be able to get location
> > every time, although I think the VPN problem is so prevalent that 
> it's going
> > to fail too often.  I'm still in favor of trying to get OBO to work, for
> > transition only, and with the caveat that it may not always work.
>
>That is a very reasonable position and one I fully support. OBO must be
>implemented even though it won't work 100% of the time.
>
> > DHCP works very well in residential VoIP.  The phone may have a NATed
> > address, but as long as the home router passes the location option,
>
>Ok, full stop here... A couple of messages on this list have made this
>point without providing any technical explanation.
>
>What I don't understand is how this will be done without upgrading or
>replacing residential firewalls?
>
>It's like saying "it's easy to get to the moon provided we shut off the
>earth's gravity."
>
> > If you don't like DHCP, use HELD,
>
>I'm advocating using HELD, but first you have to discover the LIS so you
>can do the HELD query. That's why we need STUN + DNS for LIS discovery
>on endpoints and DNS LIS discovery for OBO.
>
> >  but you still have some remnants of the VPN problem.
>
>Again, there is a split here between the regulatory and technical. The
>vast majority of users doing VOIP over VPN are "dialing-in" to corporate
>VOIP servers. There is no regulatory requirement to provide location for
>corporate users. It may well become a regulatory requirement in the
>future but nobody has even raised it yet. Given that we're still
>struggling with residential, it's safe to say that any such requirement
>is several years off so holding up everything on that requirement isn't
>necessary.
>
>That being said, the technical solution is for the provider (in this
>case the corporation) to provide the LIS and by forming a relationship
>between the VPN tunnel and the enterprise LIS so that the LIS knows to
>query an external LIS for location based on the public IP, not the
>WAN/VPN IP.
>
> >   Don't confuse DHCP for LIS
> > discovery with DHCP for location configuration.  Both work, but DHCP
> > discovery of a HELD server works.
>
>Again, I fundamentally disagree with this statement because it leaves
>out the phrase "provided we upgrade and/or replace most every
>residential firewall device currently in service."
>
> > I've stayed out of most of the LIS discovery discussions because I don't
> > seem to have much to offer.  I'll let others reply to STUN + Reverse lookup
> > + SRV. It's been discussed many times.
>
>On this list? I went through a fair portion of the list archives and
>can't find anything. And "google: ecrit stun" turns up nothing from this
>group.
>
>---
>
>The comment by Barbra Stark is quite telling; "But I'm fine for the IETF
>not to document or provide a BCP for that. I can go elsewhere for
>refining best practices. Which is why I don't really care to argue this
>question anymore."
>
>With apologies to Barbra for putting words in her mouth; "The BCP
>developed by this group ignores reality. I'll go elsewhere for for BCP".
>
>I get the impression that this has been argued many times in the past so
>I guess it's just my turn to stir up the pot ;)
>
>The framework document I'm developing for submission to my regulator
>will not follow ecrit-framework or ecript-phonebcp (though it will be
>based on it) for all of the reasons that I've made apparent on this
>list.
>
>However, the framework would be stronger if it did follow ecrit and
>likewise, ecrit-framework and ecrit-phonebcp would be stronger if they
>could demonstrate success in the marketplace.
>
>--
>John Lange
>http://www.johnlange.ca
>
>_______________________________________________
>Ecrit mailing list
>Ecrit@ietf.org
>https://www.ietf.org/mailman/listinfo/ecrit


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From: "Winterbottom, James" <James.Winterbottom@andrew.com>
To: "Brian Rosen" <br@brianrosen.net>, <Gabor.Bajko@nokia.com>, <ecrit@ietf.org>
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We had a hum on this on the list.=0D=0ABy my count the number against the i=
nclusion of any kind of statement was by far in the majority, so why is the=
 statement still there=3F=0D=0A=0D=0ACheers=0D=0AJames=0D=0A=0D=0A=0D=0A---=
--Original Message-----=0D=0AFrom: ecrit-bounces@ietf.org on behalf of Bria=
n Rosen=0D=0ASent: Wed 6/3/2009 2:06 PM=0D=0ATo: Gabor.Bajko@nokia.com; ecr=
it@ietf.org=0D=0ASubject: Re: [Ecrit] PhoneBCP again=0D=0A=20=0D=0AIf this =
is helpful to resolving the disagreement we are having, I am not=0D=0Aoppos=
ed to the change.  It does have the unfortunate change from "best=0D=0Acurr=
ent practice" to "requirements" which is a problem.=0D=0A=0D=0ABrian=0D=0A=0D=
=0A> -----Original Message-----=0D=0A> From: ecrit-bounces@ietf.org [mailto=
:ecrit-bounces@ietf.org] On Behalf=0D=0A> Of Gabor.Bajko@nokia.com=0D=0A> S=
ent: Wednesday, June 03, 2009 2:59 PM=0D=0A> To: ecrit@ietf.org=0D=0A> Subj=
ect: [Ecrit] PhoneBCP again=0D=0A>=20=0D=0A> In today's Interim conf call B=
rian mentioned that all reasonable=0D=0A> suggestions were incorporated int=
o PhoneBCP. I sent a while ago a=0D=0A> suggestion to the list to revise th=
e abstract instead of including an=0D=0A> applicability statement.=0D=0A> =0D=
=0A> From:=0D=0A>=20=0D=0A> "The IETF and other standards organization have=
 efforts targeted at=0D=0A>    standardizing various aspects of placing eme=
rgency calls on IP=0D=0A>    networks.  This memo describes best current pr=
actice on how devices,=0D=0A>    networks and services should use such stan=
dards to make emergency=0D=0A>    calls."=0D=0A>=20=0D=0A> To:=0D=0A>=20=0D=
=0A> "The IETF efforts are targeted at=0D=0A>    standardizing various aspe=
cts of placing emergency calls over the=0D=0A> Internet.  This memo describ=
es requirements for devices, networks and=0D=0A> services that should be su=
pported in order to make emergency calls over=0D=0A> the Internet."=0D=0A> =0D=
=0A> The suggestion was ignored (maybe it was not reasonable at that time),=0D=
=0A> but since today there were discussions around this aspect, I thought i=
t=0D=0A> may worth resending it.=0D=0A>=20=0D=0A> - Gabor=0D=0A> __________=
_____________________________________=0D=0A> Ecrit mailing list=0D=0A> Ecri=
t@ietf.org=0D=0A> https://www.ietf.org/mailman/listinfo/ecrit=0D=0A=0D=0A__=
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From: Marc Linsner <mlinsner@cisco.com>
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Thread-Topic: [Ecrit] Emergency Call Framework for Canada; Questions on draft-ietf-ecrit-framework-09
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Subject: Re: [Ecrit] Emergency Call Framework for Canada; Questions on draft-ietf-ecrit-framework-09
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John,

I would guess by your comments that you missed some early threads in both
ECRIT and GEOPRIV.

more in-line....


On 6/3/09 2:52 PM, "John Lange" <john@johnlange.ca> wrote:

> On Tue, 2009-06-02 at 17:44 -0400, Brian Rosen wrote:
>> We're trying to define real world solutions.  We may fail, but we're trying.
> 
> The work ecrit has done on this issue is exemplary. Much better than
> previous attempts (i2).
> 
> However, as James Winterbottom pointed out, "There was one very strong
> point made in i2 all along, and that is NO UPGRADES to residential
> equipment is required in order for it work."

Requirements are wonderful, they guide the solutions.  Not every requirement
has a technically feasible solution.  We can certainly debate how one gains
new functionality without upgrades, but that will probably lead us to a very
big rat hole, one the IETF has been in many times before.

> 
> So i2 might be dead, but the various groups that represent PSAPs in the
> US and Canada have made this a clear requirement. So, even if you
> completely disagree with the need for equipment replacement, the
> parameters have already been set.

i2 is not an IETF developed solution.

> 
>> OBO doesn't always work, because by the time a call gets to a VoIP provider,
>> it's IP address can be obscured by VPNs.  It doesn't work because the
>> regulator can't force connections between a service provider it doesn't have
>> jurisdiction over to an access network (which it probably always has
>> jurisdiction over, because it's always local).
> 
>>   The easy example is my
>> famous "Sierra Leone VoIP Services Pty" provider serving a customer at a
>> Starbucks in, say, Calgary.  You can scream all you want, but CRTC can't
>> tell SLVS to connect to Rogers Cable.
> 
> Your example clearly identifies the divide between a
> technical+regulatory solution and a strictly technical one.
> 
> In the above example, technically it may not work but from a regulatory
> perspective it does work. It works because the CRTC doesn't care if the
> SLVS user can reach 911 from his laptop in a Calgary Starbucks. SLVS is
> not regulated by the CRTC and therefore users of SLVS are not required
> to have access to 911.
> 
> To be clear, the CRTC only requires that customers of Canadian VOIP
> providers have access to 911 while in Canada.

The CRTC can and will do whatever they want, based on the input from whoever
provides them input.  If Canada decides to not offer emergency assistance to
visitors to Canada, so be it.  I would hope the CRTC would consider the
consequences of their policies governing the Internet usage.

> 
> Conversely, Canadians using their devices while outside of Canada _MUST
> NOT_ have access to a Canadian PSAP (i.e. create nuisance calls). It's
> the opposite of what some might think.
> 
> If the SLVS regulator wants to dictate that SLVS customers have access
> to 911 (or whatever) everyplace on earth, then I say good luck with
> that.
> 
The two points you make are exactly why regulators should proceed with
caution when making policy for the Internet.

>> On the other hand, the device can get location from the hotspot in
>> Starbucks, who can pass it through SLVS on it's way to the Calgary PSAP.
> 
> On the one hand you've argued that anything based on a public IP won't
> work because the CRTC doesn't have jurisdiction over SLVS, but on the
> other hand you've ignored that very same regulatory restriction by
> assuming that SLVS will have a relationship with a Calgary PSAP.
> 
> This is not the case. I can positively assure you that the Calgary PSAP
> will not accept calls from any VOIP provider that it does not have a
> prior relationship with and for the foreseeable future that means VOIP
> providers inside Canada.

The Calgary PSAP can certainly dictate who can and who can't call them.
They can require that all citizens of Calgary MUST do business with approved
providers in order to enjoy the luxury of emergency assistance from
governmental agencies.  Although, IMO, this is somewhat contrary to the
globalization the Internet allows.


> 
> PSAPs are _very_ sensitive to nuisance calls so the concept that the
> PSAP/ESRP will be open to any IP address in the entire world... no.

This is not the consensus when I talk to PSAPs.  They would rather deal with
all the bad stuff instead of missing a real call for help.

> 
> And as you already pointed out, there can't be a regulatory requirement
> for this because the CRTC has no jurisdiction to require a relationship
> with SLVS. (as a side note; the CRTC actually has no jurisdiction over
> PSAPs what-so-ever but PSAPs will likely go along with the CRTC
> decision).
> 
> So, if I understand the position of this group, solutions that require
> relationships between VOIP providers, ISPs, and PSAPs are not considered
> viable because they require regulatory authority over all three parties
> everyplace on earth which is impossible.

IMO, a more correct characterization is: The IETF is all about making the
end-user experience better and the Internet work better.  The success of the
Internet can be directly related to the distillation of access, network, and
applications.  Hence neither GeoPriv nor ECRIT will propose a solution that
requires relationships between various providers at different layers as that
would be contrary to the foundation of the Internet.

> 
> But the reality is, regulators only care about their own jurisdictions
> and they DO have authority to order relationships between all three
> parties.

As long as they realize they are restricting their constituent's choice to
providers within purview of their jurisdiction.
> 
>> From the standpoint of the VOIP provider, the PSAP, the ISP and the
> regulator, the fact that a given solution might not work if one of the
> three parties is outside the jurisdiction of the regulator is
> irrelevant.
> 
>> OBO is usually aimed at transition: before we get the devices all upgraded,
>> what do we do.  In that environment, we may not be able to get location
>> every time, although I think the VPN problem is so prevalent that it's going
>> to fail too often.  I'm still in favor of trying to get OBO to work, for
>> transition only, and with the caveat that it may not always work.
> 
> That is a very reasonable position and one I fully support. OBO must be
> implemented even though it won't work 100% of the time.
> 
>> DHCP works very well in residential VoIP.  The phone may have a NATed
>> address, but as long as the home router passes the location option,
> 
> Ok, full stop here... A couple of messages on this list have made this
> point without providing any technical explanation.
> 
> What I don't understand is how this will be done without upgrading or
> replacing residential firewalls?

It won't happen without upgrades.

> 
> It's like saying "it's easy to get to the moon provided we shut off the
> earth's gravity."
> 
>> If you don't like DHCP, use HELD,
> 
> I'm advocating using HELD, but first you have to discover the LIS so you
> can do the HELD query. That's why we need STUN + DNS for LIS discovery
> on endpoints and DNS LIS discovery for OBO.

The solutions around this have been proposed multiple times without
significant progress.  Hopefully the technical aspects of this solution will
be resolved soon.

> 
>>  but you still have some remnants of the VPN problem.
> 
> Again, there is a split here between the regulatory and technical. The
> vast majority of users doing VOIP over VPN are "dialing-in" to corporate
> VOIP servers. There is no regulatory requirement to provide location for
> corporate users. It may well become a regulatory requirement in the
> future but nobody has even raised it yet. Given that we're still
> struggling with residential, it's safe to say that any such requirement
> is several years off so holding up everything on that requirement isn't
> necessary.

The IETF is proposing solutions that fit the Internet model which includes
VPNs.  The IETF doesn't sequence it's work based on regulation.

> 
> That being said, the technical solution is for the provider (in this
> case the corporation) to provide the LIS and by forming a relationship
> between the VPN tunnel and the enterprise LIS so that the LIS knows to
> query an external LIS for location based on the public IP, not the
> WAN/VPN IP.

Again, an IETF solution will not force relationships.

> 
>>   Don't confuse DHCP for LIS
>> discovery with DHCP for location configuration.  Both work, but DHCP
>> discovery of a HELD server works.
> 
> Again, I fundamentally disagree with this statement because it leaves
> out the phrase "provided we upgrade and/or replace most every
> residential firewall device currently in service."
> 
>> I've stayed out of most of the LIS discovery discussions because I don't
>> seem to have much to offer.  I'll let others reply to STUN + Reverse lookup
>> + SRV. It's been discussed many times.
> 
> On this list? I went through a fair portion of the list archives and
> can't find anything. And "google: ecrit stun" turns up nothing from this
> group.

Since most of this discussion is a GeoPriv issue, you would probably have
better luck searching there.  GeoPriv is defining how a device discovers
it's location.

-Marc-

> 
> ---
> 
> The comment by Barbra Stark is quite telling; "But I'm fine for the IETF
> not to document or provide a BCP for that. I can go elsewhere for
> refining best practices. Which is why I don't really care to argue this
> question anymore."
> 
> With apologies to Barbra for putting words in her mouth; "The BCP
> developed by this group ignores reality. I'll go elsewhere for for BCP".
> 
> I get the impression that this has been argued many times in the past so
> I guess it's just my turn to stir up the pot ;)
> 
> The framework document I'm developing for submission to my regulator
> will not follow ecrit-framework or ecript-phonebcp (though it will be
> based on it) for all of the reasons that I've made apparent on this
> list.
> 
> However, the framework would be stronger if it did follow ecrit and
> likewise, ecrit-framework and ecrit-phonebcp would be stronger if they
> could demonstrate success in the marketplace.



From john@johnlange.ca  Wed Jun  3 14:07:14 2009
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On Wed, 2009-06-03 at 14:29 -0500, James M. Polk wrote:
> one the one hand you say "i2 might be dead", and on the other hand 
> you mean "we need to remain constrained by the i2 limitations".

I think it's pretty clear that the PSAPs have the same requirements
today that they always did. And with respect to the issue of replacement
or upgrading end-user equipment, I agree with them.

> this is interesting considering i2 didn't change anything in the 
> PSAP, so why are PSAPs involved in making this requirement when they 
> get to "stay in the past" with anything the IETF moves forward with?

I've asked the same question many many times. The answer is; because the
PSAP + the ILECs are by far the most powerful influence on the
regulators.

Of course that is not binding on the IETF but there requirements are
never the less something worth keeping in mind.

> I'm confused.

Ah yes. It's a messed up world we live in. The PSAP argument basically
amounts to; "the world is changing but we don't like change so please
make your square peg fit in this round hole. Oh, and the cost to us must
be zero."

Please don't get me started on a PSAP rant. They are dinosaurs all...
But they've been trained well by the ILECs and that's the world we live
in... ( I should clarify that i mean Canadian PSAPs).

> i3, from the beginning, was to be built on the idea that location 
> would be sent from the calling phone. This means "the residential 
> phone and its network" must be changed to support IP, and all that IP 
> brings to the table.

But that is technically not a true statement. Yes the phone will have to
be changed to support location, and yes, the best way to get accurate
location is from the local network. But no, the local network does not
have to be changed in order for the phone to get location.

Other devices can act OBO the local network and will do just as good a
job frequently enough to satisfy regulatory requirements until the day
that every RG has been replaced and every DHCP server does option 99 (or
whatever the solution turns out to be).

> Now you are saying the RG cannot be changed for i3?

I'm not saying that at all. What I am saying is, this won't work for
residential today and therefore it won't be acceptable to the regulators
(today).

I understand I could be the one in the wrong here because I don't
clearly understand the goals of this group.

If ecrit is saying "yes we know ecrit-framework and phonebcp can't be
implemented today. We are developing a standard for the future. After we
are done we'll do some interim standards to bridge between today and the
ecrit-framework of the future", then I think that's a reasonable
approach but that is not the impression I've had up until now.

My only concern would be that the progress is too slow. We need the
interim solutions before future solutions. Without them, the
aforementioned PSAPs and ILECs will impose their own "home-brew"
solutions with the associated predictable costs.

BTW, I listened in on the last 45 minutes of the call today (I screwed
up the timezone conversion or I would have been there sooner). Very
informative. For one thing, I had no idea that Best Current Practise is
not intended to mean what it says. It's not intended to be the best nor
is it current so that alleviates some confusion.

And the debate about the cell phone group (3GP?) expecting the proxy to
do location, not the handset sounded a lot like OBO-redux to me.

> BTW - I was co-chair of i3 with Brian for the first year...

What is the status of NENA with respect to i3? Is work still going on?
Has ecrit replaced it or exactly what is the relationship between the
two groups?

-- 
John Lange
http://www.johnlange.ca


From john@johnlange.ca  Wed Jun  3 14:45:19 2009
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Marc, no need for me to quote your entire reply. I just want to say that
your response was very informative and shed a lot of light onto how the
IETF sees regulatory requirements and it's goals as far as developing
standards.

I just might be able to stop tormenting this list now.... ;)

-- 
John Lange
http://www.johnlange.ca



From Gabor.Bajko@nokia.com  Wed Jun  3 17:04:48 2009
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From: <Gabor.Bajko@nokia.com>
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Well, if we can't scope it down this way, then I would prefer having an exp=
licit applicability statement.

- gabor=20

  >-----Original Message-----
  >From: ext Brian Rosen [mailto:br@brianrosen.net]=20
  >Sent: Wednesday, June 03, 2009 12:07 PM
  >To: Bajko Gabor (Nokia-CIC/MtView); ecrit@ietf.org
  >Subject: RE: [Ecrit] PhoneBCP again
  >
  >If this is helpful to resolving the disagreement we are=20
  >having, I am not opposed to the change.  It does have the=20
  >unfortunate change from "best current practice" to=20
  >"requirements" which is a problem.
  >
  >Brian
  >
  >> -----Original Message-----
  >> From: ecrit-bounces@ietf.org=20
  >[mailto:ecrit-bounces@ietf.org] On Behalf=20
  >> Of Gabor.Bajko@nokia.com
  >> Sent: Wednesday, June 03, 2009 2:59 PM
  >> To: ecrit@ietf.org
  >> Subject: [Ecrit] PhoneBCP again
  >>=20
  >> In today's Interim conf call Brian mentioned that all reasonable=20
  >> suggestions were incorporated into PhoneBCP. I sent a while ago a=20
  >> suggestion to the list to revise the abstract instead of=20
  >including an=20
  >> applicability statement.
  >>=20
  >> From:
  >>=20
  >> "The IETF and other standards organization have efforts targeted at
  >>    standardizing various aspects of placing emergency calls on IP
  >>    networks.  This memo describes best current practice on=20
  >how devices,
  >>    networks and services should use such standards to make=20
  >emergency
  >>    calls."
  >>=20
  >> To:
  >>=20
  >> "The IETF efforts are targeted at
  >>    standardizing various aspects of placing emergency=20
  >calls over the=20
  >> Internet.  This memo describes requirements for devices,=20
  >networks and=20
  >> services that should be supported in order to make emergency calls=20
  >> over the Internet."
  >>=20
  >> The suggestion was ignored (maybe it was not reasonable at=20
  >that time),=20
  >> but since today there were discussions around this aspect,=20
  >I thought=20
  >> it may worth resending it.
  >>=20
  >> - Gabor
  >> _______________________________________________
  >> Ecrit mailing list
  >> Ecrit@ietf.org
  >> https://www.ietf.org/mailman/listinfo/ecrit
  >
  >=

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Subject: [Ecrit] Outcome of Phone BCP hum
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Hello,=0D=0A=0D=0ASeveral weeks ago now Marc called for a hum on the need a=
nd wording of=0D=0Aapplicability in the phone BCP document.=0D=0A=0D=0AI be=
lieve that after clarification of what the hum was actually for=0D=0Athere =
was a general consensus that there was no need for such a=0D=0Astatement, t=
hough no formal outcome was ever announced by the WG chairs.=0D=0A=0D=0AI a=
m now extremely alarmed to find that there is list discussion on=0D=0Aalter=
ing the current wording when:=0D=0A1) Some people believe the outcome of th=
e hum was such that no=0D=0Aapplicability statement should be included.=0D=0A=
2) The chairs have not formally posted what the outcome was.=0D=0A=0D=0AI a=
m formally requesting that no further posts on proposing new wording=0D=0Ab=
e discussed until the chair come back with a formal outcome of the=0D=0Apre=
vious hum.=0D=0A=0D=0ACheers=0D=0AJames=0D=0A------------------------------=
------------------------------------------------------------------=0D=0AThi=
s message is for the designated recipient only and may=0D=0Acontain privile=
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e original.  Any unauthorized use of=0D=0Athis email is prohibited.=0D=0A--=
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From drage@alcatel-lucent.com  Thu Jun  4 03:59:23 2009
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From: "DRAGE, Keith (Keith)" <drage@alcatel-lucent.com>
To: "Winterbottom, James" <James.Winterbottom@andrew.com>, ECRIT <ecrit@ietf.org>
Date: Thu, 4 Jun 2009 12:59:19 +0200
Thread-Topic: Outcome of Phone BCP hum
Thread-Index: Acnk128Te6eqgiZLSliatPb4pkWy2AAK5lpw
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Subject: Re: [Ecrit] Outcome of Phone BCP hum
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You are confusing the absence of consensus for one particular approach with=
 support for the status quo. They are not the same thing.

So yes the chairs need to make clear the position, and I believe that was t=
he resultant intent of the call yesterday, but that does not make the exist=
ing document the consensus.

Nor does it preclude any discussion on the document, unless the document it=
self is being abandoned.

regards

Keith

> -----Original Message-----
> From: ecrit-bounces@ietf.org [mailto:ecrit-bounces@ietf.org]=20
> On Behalf Of Winterbottom, James
> Sent: Thursday, June 04, 2009 6:44 AM
> To: ecrit@ietf.org
> Subject: [Ecrit] Outcome of Phone BCP hum
>=20
> Hello,
>=20
> Several weeks ago now Marc called for a hum on the need and=20
> wording of applicability in the phone BCP document.
>=20
> I believe that after clarification of what the hum was=20
> actually for there was a general consensus that there was no=20
> need for such a statement, though no formal outcome was ever=20
> announced by the WG chairs.
>=20
> I am now extremely alarmed to find that there is list=20
> discussion on altering the current wording when:
> 1) Some people believe the outcome of the hum was such that=20
> no applicability statement should be included.
> 2) The chairs have not formally posted what the outcome was.
>=20
> I am formally requesting that no further posts on proposing=20
> new wording be discussed until the chair come back with a=20
> formal outcome of the previous hum.
>=20
> Cheers
> James
> --------------------------------------------------------------
> ----------------------------------
> This message is for the designated recipient only and may=20
> contain privileged, proprietary, or otherwise private information. =20
> If you have received it in error, please notify the sender=20
> immediately and delete the original.  Any unauthorized use of=20
> this email is prohibited.
> --------------------------------------------------------------
> ----------------------------------
> [mf2]
>=20
> _______________________________________________
> Ecrit mailing list
> Ecrit@ietf.org
> https://www.ietf.org/mailman/listinfo/ecrit
> =

From James.Winterbottom@andrew.com  Thu Jun  4 04:20:55 2009
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From: "Winterbottom, James" <James.Winterbottom@andrew.com>
To: "DRAGE, Keith (Keith)" <drage@alcatel-lucent.com>, "ECRIT" <ecrit@ietf.org>
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Subject: Re: [Ecrit] Outcome of Phone BCP hum
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I made no assumptions, I based in on people's clear indication, not on waff=
le that was included.=0D=0A=0D=0AA hum response should be clear and not be =
clouded with waffle and justification.=0D=0A=0D=0ACheers=0D=0AJames=0D=0A=0D=
=0A=0D=0A-----Original Message-----=0D=0AFrom: DRAGE, Keith (Keith) [mailto=
:drage@alcatel-lucent.com]=0D=0ASent: Thu 6/4/2009 5:59 AM=0D=0ATo: Winterb=
ottom, James; ECRIT=0D=0ASubject: RE: Outcome of Phone BCP hum=0D=0A=20=0D=0A=
You are confusing the absence of consensus for one particular approach with=
 support for the status quo. They are not the same thing.=0D=0A=0D=0ASo yes=
 the chairs need to make clear the position, and I believe that was the res=
ultant intent of the call yesterday, but that does not make the existing do=
cument the consensus.=0D=0A=0D=0ANor does it preclude any discussion on the=
 document, unless the document itself is being abandoned.=0D=0A=0D=0Aregard=
s=0D=0A=0D=0AKeith=0D=0A=0D=0A> -----Original Message-----=0D=0A> From: ecr=
it-bounces@ietf.org [mailto:ecrit-bounces@ietf.org]=20=0D=0A> On Behalf Of =
Winterbottom, James=0D=0A> Sent: Thursday, June 04, 2009 6:44 AM=0D=0A> To:=
 ecrit@ietf.org=0D=0A> Subject: [Ecrit] Outcome of Phone BCP hum=0D=0A>=20=0D=
=0A> Hello,=0D=0A>=20=0D=0A> Several weeks ago now Marc called for a hum on=
 the need and=20=0D=0A> wording of applicability in the phone BCP document.=0D=
=0A>=20=0D=0A> I believe that after clarification of what the hum was=20=0D=
=0A> actually for there was a general consensus that there was no=20=0D=0A>=
 need for such a statement, though no formal outcome was ever=20=0D=0A> ann=
ounced by the WG chairs.=0D=0A>=20=0D=0A> I am now extremely alarmed to fin=
d that there is list=20=0D=0A> discussion on altering the current wording w=
hen:=0D=0A> 1) Some people believe the outcome of the hum was such that=20=0D=
=0A> no applicability statement should be included.=0D=0A> 2) The chairs ha=
ve not formally posted what the outcome was.=0D=0A>=20=0D=0A> I am formally=
 requesting that no further posts on proposing=20=0D=0A> new wording be dis=
cussed until the chair come back with a=20=0D=0A> formal outcome of the pre=
vious hum.=0D=0A>=20=0D=0A> Cheers=0D=0A> James=0D=0A> --------------------=
------------------------------------------=0D=0A> -------------------------=
---------=0D=0A> This message is for the designated recipient only and may =0D=
=0A> contain privileged, proprietary, or otherwise private information.  =0D=
=0A> If you have received it in error, please notify the sender=20=0D=0A> i=
mmediately and delete the original.  Any unauthorized use of=20=0D=0A> this=
 email is prohibited.=0D=0A> ----------------------------------------------=
----------------=0D=0A> ----------------------------------=0D=0A> [mf2]=0D=0A=
>=20=0D=0A> _______________________________________________=0D=0A> Ecrit ma=
iling list=0D=0A> Ecrit@ietf.org=0D=0A> https://www.ietf.org/mailman/listin=
fo/ecrit=0D=0A>=20=0D=0A=0D=0A---------------------------------------------=
---------------------------------------------------=0D=0AThis message is fo=
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ror, please notify the sender=0D=0Aimmediately and delete the original.  An=
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From mlinsner@cisco.com  Thu Jun  4 05:22:26 2009
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From: Marc Linsner <mlinsner@cisco.com>
To: "Winterbottom, James" <James.Winterbottom@andrew.com>, <ecrit@ietf.org>
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Thread-Topic: [Ecrit] Outcome of Phone BCP hum
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Subject: Re: [Ecrit] Outcome of Phone BCP hum
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As stated in the call yesterday.

Taken from my email on April 24, 2009:

"http://www.ietf.org/internet-drafts/draft-ietf-ecrit-phonebcp-09.txt

At the San Francisco meeting and ensuing list threads, the last issue aroun=
d
PhoneBCP was whether or not to include an =8Capplicability statement=B9.  The
hum during the meeting was inconclusive.  The draft editor has included tex=
t
in this latest version in an attempt to compromise on this issue.

Please review this version and respond by Friday May 1 to the list as to
your acceptance of this change."

A clarification on April 27, 2009:

"This is a consolidated hum.

If you don't agree that we need an applicability statement, hum against it.

If you agree that we need an applicability statement, but don't like the
current text, hum against it.

If you agree with the statement as written, hum for it.

If consensus is against the statement, it will be taken out of the draft."


The outcome was as follows:

10 against the change
4 for the change
2 no objection to the change

The chairs are reviewing this with the ADs to decide the next steps.

-Marc-





On 6/4/09 1:43 AM, "Winterbottom, James" <James.Winterbottom@andrew.com>
wrote:

> Hello,
>=20
> Several weeks ago now Marc called for a hum on the need and wording of
> applicability in the phone BCP document.
>=20
> I believe that after clarification of what the hum was actually for
> there was a general consensus that there was no need for such a
> statement, though no formal outcome was ever announced by the WG chairs.
>=20
> I am now extremely alarmed to find that there is list discussion on
> altering the current wording when:
> 1) Some people believe the outcome of the hum was such that no
> applicability statement should be included.
> 2) The chairs have not formally posted what the outcome was.
>=20
> I am formally requesting that no further posts on proposing new wording
> be discussed until the chair come back with a formal outcome of the
> previous hum.
>=20
> Cheers
> James
> -------------------------------------------------------------------------=
-----
> ------------------
> This message is for the designated recipient only and may
> contain privileged, proprietary, or otherwise private information.
> If you have received it in error, please notify the sender
> immediately and delete the original.  Any unauthorized use of
> this email is prohibited.
> -------------------------------------------------------------------------=
-----
> ------------------
> [mf2]
>=20
> _______________________________________________
> Ecrit mailing list
> Ecrit@ietf.org
> https://www.ietf.org/mailman/listinfo/ecrit



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Date: Thu, 4 Jun 2009 16:31:45 +0300
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Thread-Topic: PROTO writeup for draft-patel-ecrit-sos-parameter
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From: "Tschofenig, Hannes (NSN - FI/Espoo)" <hannes.tschofenig@nsn.com>
To: "ext DRAGE, Keith (Keith)" <drage@alcatel-lucent.com>, "Cullen Jennings" <fluffy@cisco.com>
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Cc: ECRIT <ecrit@ietf.org>
Subject: Re: [Ecrit] PROTO writeup for draft-patel-ecrit-sos-parameter
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Hi Keith,=20
=20
Thanks for the update. Good to hear that it is being implemented.=20

Ciao
Hannes


>> The document originally came from the 3GPP and was presented to the=20
>> IETF because a Standards Track extension to SIP was needed.
>
>This is not quite accurate.
>
>The requirement came from 3GPP. The original requirements did=20
>get some detailed review in a 3GPP meeting.
>
>A number of participants in 3GPP have worked on the document=20
>and reviewed the contents.
>
>The document is used as a normative reference by 3GPP=20
>documents, and those 3GPP documents are in process of=20
>implementation by a number of vendors.
>
>However there has been no formal review of the contents within=20
>a 3GPP meeting or other formal 3GPP process, and the document=20
>itself has never been a 3GPP document.
>
>This does match the process that has been followed on a number=20
>of other 3GPP dependencies on IETF.
>
>regards
>
>Keith
>
>=20
>
>> -----Original Message-----
>> From: ecrit-bounces@ietf.org [mailto:ecrit-bounces@ietf.org]=20
>On Behalf=20
>> Of Tschofenig, Hannes (NSN - FI/Espoo)
>> Sent: Wednesday, June 03, 2009 8:57 AM
>> To: Cullen Jennings; iesg-secretary@ietf.org
>> Cc: ECRIT
>> Subject: [Ecrit] PROTO writeup for draft-patel-ecrit-sos-parameter
>>=20
>> PROTO Writeup for draft-patel-ecrit-sos-parameter=20
>> =
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>>=20
>> http://tools.ietf.org/html/draft-patel-ecrit-sos-parameter-06
>>=20
>>=20
>>    (1.a)  Who is the Document Shepherd for this document?  Has the
>>       Document Shepherd personally reviewed this version of the=20
>> document
>>       and, in particular, does he or she believe this=20
>version is ready
>>       for forwarding to the IESG for publication?
>>=20
>> Hannes Tschofenig is the document shepherd.=20
>> The document is ready for publication. Cullen Jennings, who is the=20
>> responsible AD, indicated that an additional review from SIP experts=20
>> may be performed.
>>=20
>>    (1.b)  Has the document had adequate review both from key members=20
>> of
>>       the interested community and others?  Does the=20
>Document Shepherd
>>       have any concerns about the depth or breadth of the=20
>reviews that
>>       have been performed?
>>=20
>> The document originally came from the 3GPP and was presented to the=20
>> IETF
>>=20
>> because a Standards Track extension to SIP was needed. The document=20
>> was reviewed by ECRIT working group members and an expert reviewer,=20
>> namely Gonzallo Camarillo, was appointed.
>> His review can be found here:=20
>> http://www.ietf.org/mail-archive/web/ecrit/current/msg06037.html
>> His comments got addressed in subsequent draft versions.=20
>>=20
>>    (1.c)  Does the Document Shepherd have concerns that the document
>>       needs more review from a particular or broader perspective,=20
>> e.g.,
>>       security, operational complexity, someone familiar with AAA,
>>       internationalization or XML?
>>=20
>> No.
>>=20
>>    (1.d)  Does the Document Shepherd have any specific concerns or
>>       issues with this document that the Responsible Area Director
>>       and/or the IESG should be aware of?  For example, perhaps he or
>>       she is uncomfortable with certain parts of the document, or has
>>       concerns whether there really is a need for it.  In any event,=20
>> if
>>       the interested community has discussed those issues and has
>>       indicated that it still wishes to advance the document, detail
>>       those concerns here.
>>=20
>> There are no concerns with the document.
>>=20
>>    (1.e)  How solid is the consensus of the interested community=20
>> behind
>>       this document?  Does it represent the strong concurrence of a=20
>> few
>>       individuals, with others being silent, or does the interested
>>       community as a whole understand and agree with it?
>>=20
>> This document is not a product of the ECRIT working group=20
>but required=20
>> by the 3GPP for their Release 7 emergency services architecture.
>> There are architectural differences between the IETF and the 3GPP=20
>> emergency services architecture whereby the solution=20
>developed in this=20
>> document is currenly only needed by the 3GPP.
>>=20
>> There is, however, consensus within the ECRIT WG to publish the=20
>> document.
>>=20
>>    (1.f)  Has anyone threatened an appeal or otherwise indicated=20
>> extreme
>>       discontent?  If so, please summarise the areas of conflict in
>>       separate email messages to the Responsible Area Director.  (It
>>       should be in a separate email because this questionnaire is
>>       entered into the ID Tracker.)
>>=20
>> No. There were only questions regarding the overall interworking=20
>> between
>>=20
>> IETF and 3GPP when it comes to work that is of interest for the 3GPP=20
>> only but has to be carried out in the IETF. This relates to the=20
>> ongoing discussion about the SIP Change Process.
>>=20
>>    (1.g)  Has the Document Shepherd personally verified that the
>>       document satisfies all ID nits?  (See
>>       http://www.ietf.org/ID-Checklist.html and
>>       http://tools.ietf.org/tools/idnits/).  Boilerplate checks are=20
>> not
>>       enough; this check needs to be thorough.  Has the document met=20
>> all
>>       formal review criteria it needs to, such as the MIB Doctor,=20
>> media
>>       type and URI type reviews?
>>=20
>> The ABNF parses with no errors.
>> Nits have been checked. The errors regarding RFC 2119=20
>boilerplate seem=20
>> to be incorrect.
>>=20
>>    (1.h)  Has the document split its references into normative and
>>       informative?  Are there normative references to documents that=20
>> are
>>       not ready for advancement or are otherwise in an unclear state?
>>       If such normative references exist, what is the strategy for=20
>> their
>>       completion?  Are there normative references that are downward
>>       references, as described in [RFC3967]?  If so, list these=20
>> downward
>>       references to support the Area Director in the Last Call=20
>> procedure
>>       for them [RFC3967].
>>=20
>> The references in the document have been split into normative and=20
>> informative.
>> Normative references are all stable documents published as RFCs.
>>=20
>>    (1.i)  Has the Document Shepherd verified that the document IANA
>>       consideration section exists and is consistent with the body of
>>       the document?  If the document specifies protocol extensions,=20
>> are
>>       reservations requested in appropriate IANA registries?  Are the
>>       IANA registries clearly identified?  If the document creates a=20
>> new
>>       registry, does it define the proposed initial contents of the
>>       registry and an allocation procedure for future registrations?
>>       Does it suggested a reasonable name for the new registry?  See
>>       [I-D.narten-iana-considerations-rfc2434bis].  If the document
>>       describes an Expert Review process has Shepherd conferred with=20
>> the
>>       Responsible Area Director so that the IESG can appoint the=20
>> needed
>>       Expert during the IESG Evaluation?
>>=20
>> IANA considerations exist within the document and are=20
>consistent with=20
>> the body of the document. The new URI parameter has been=20
>specified as=20
>> defined by RFC 3261.
>>=20
>> The document requests IANA to register the URI parameter.
>>=20
>>    (1.j)  Has the Document Shepherd verified that sections of the
>>       document that are written in a formal language, such as XML=20
>> code,
>>       BNF rules, MIB definitions, etc., validate correctly in an
>>       automated checker?
>>=20
>> Not applicable.
>>=20
>>    (1.k)  The IESG approval announcement includes a Document
>>       Announcement Write-Up.  Please provide such a Document
>>       Announcement Writeup?  Recent examples can be found in the
>>       "Action" announcements for approved documents.  The approval
>>       announcement contains the following sections:
>>=20
>>       Technical Summary
>>=20
>>    This document defines a new Session Initiation Protocol
>> (SIP) Uniform
>>    Resource Identifier (URI) parameter intended for marking SIP
>>    registration requests related to emergency services.  The usage of
>>    this new URI parameter complements the usage of the=20
>Service Uniform
>>    Resource Name (URN) and is not intended to replace it.
>>=20
>>       Working Group Summary
>>=20
>> This document is not the product of a working group. The=20
>document was=20
>> considered to become an ECRIT working group item. However, based on=20
>> the current work schedule and the urgency of the document=20
>the decision=20
>> was made to progress it as an AD sponsored document (initially with=20
>> Jon Peterson as the AD sponsoring it).
>>=20
>>       Document Quality
>>=20
>> The document has been reviewed by IETF ECRIT WG members and by the=20
>> 3GPP community. An expert review has been carried out by Gonzalo=20
>> Camarillo.
>>=20
>> The implementation status of this document is unknown.=20
>>=20
>>       Personnel
>>=20
>> Hannes Tschofenig is the document shepherd for this document.=20
>> Cullen Jennings is the responsible AD.=20
>> _______________________________________________
>> Ecrit mailing list
>> Ecrit@ietf.org
>> https://www.ietf.org/mailman/listinfo/ecrit
>>=20
>

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From: Marc Linsner <mlinsner@cisco.com>
To: "'ecrit'" <ecrit@ietf.org>
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Subject: [Ecrit] Phone BCP
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All,

On April 24, 2009 we requested the following:

"http://www.ietf.org/internet-drafts/draft-ietf-ecrit-phonebcp-09.txt

At the San Francisco meeting and ensuing list threads, the last issue aroun=
d
PhoneBCP was whether or not to include an =8Capplicability statement=B9.  The
hum during the meeting was inconclusive.  The draft editor has included tex=
t
in this latest version in an attempt to compromise on this issue.

Please review this version and respond by Friday May 1 to the list as to
your acceptance of this change."

On on April 27, 2009 we answered a clarification question:

"This is a consolidated hum.

If you don't agree that we need an applicability statement, hum against it.

If you agree that we need an applicability statement, but don't like the
current text, hum against it.

If you agree with the statement as written, hum for it.

If consensus is against the statement, it will be taken out of the draft."


The outcome was as follows:

10 against the change
4 for the change
2 no objection to the change

We now declare that we do not have consensus to support the additional text
that was added as the outcome of a discussion labeled 'applicability
statement'.

We are asking the document editors to produce draft -10 without the text,
specifically paragraph 3 of section 2.  We will then be asking everyone to
further review the draft when that is completed.


Thanks,

Marc & Hannes



From br@brianrosen.net  Thu Jun  4 09:59:03 2009
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From: "Brian Rosen" <br@brianrosen.net>
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Subject: [Ecrit] FW: New Version Notification for draft-ietf-ecrit-phonebcp-10
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This is a mistake, and I will have to revise it, sorry

-----Original Message-----
From: IETF I-D Submission Tool [mailto:idsubmission@ietf.org]=20
Sent: Thursday, June 04, 2009 12:54 PM
To: br@brianrosen.net
Cc: jmpolk@cisco.com
Subject: New Version Notification for draft-ietf-ecrit-phonebcp-10=20


A new version of I-D, draft-ietf-ecrit-phonebcp-10.txt has been =
successfuly submitted by Brian Rosen and posted to the IETF repository.

Filename:	 draft-ietf-ecrit-phonebcp
Revision:	 10
Title:		 Best Current Practice for Communications Services in support of =
Emergency Calling
Creation_date:	 2009-06-04
WG ID:		 ecrit
Number_of_pages: 45

Abstract:
The IETF and other standards organization have efforts targeted at
standardizing various aspects of placing emergency calls on IP
networks.  This memo describes best current practice on how devices,
networks and services should use such standards to make emergency
calls.
                                                                         =
        =20


The IETF Secretariat.



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--NextPart

A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Emergency Context Resolution with Internet Technologies Working Group of the IETF.


	Title           : Best Current Practice for Communications Services in support of Emergency Calling
	Author(s)       : B. Rosen, J. Polk
	Filename        : draft-ietf-ecrit-phonebcp-10.txt
	Pages           : 45
	Date            : 2009-06-04

The IETF and other standards organization have efforts targeted at
standardizing various aspects of placing emergency calls on IP
networks.  This memo describes best current practice on how devices,
networks and services should use such standards to make emergency
calls.

A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-ecrit-phonebcp-10.txt

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Subject: [Ecrit] FW: New Version Notification for draft-ietf-ecrit-phonebcp-11
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Okay, so -10 has an update to a reference that was a draft and is now an =
RFC, and a fix to the "inserted-by" parameter text noticed by John =
Elway.  -11 is the same as 10 with the "applicability" text removed.

Brian

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Subject: New Version Notification for draft-ietf-ecrit-phonebcp-11=20


A new version of I-D, draft-ietf-ecrit-phonebcp-11.txt has been =
successfuly submitted by Brian Rosen and posted to the IETF repository.

Filename:	 draft-ietf-ecrit-phonebcp
Revision:	 11
Title:		 Best Current Practice for Communications Services in support of =
Emergency Calling
Creation_date:	 2009-06-04
WG ID:		 ecrit
Number_of_pages: 45

Abstract:
The IETF and other standards organization have efforts targeted at
standardizing various aspects of placing emergency calls on IP
networks.  This memo describes best current practice on how devices,
networks and services should use such standards to make emergency
calls.
                                                                         =
        =20


The IETF Secretariat.



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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Emergency Context Resolution with Internet Technologies Working Group of the IETF.


	Title           : Best Current Practice for Communications Services in support of Emergency Calling
	Author(s)       : B. Rosen, J. Polk
	Filename        : draft-ietf-ecrit-phonebcp-11.txt
	Pages           : 45
	Date            : 2009-06-04

The IETF and other standards organization have efforts targeted at
standardizing various aspects of placing emergency calls on IP
networks.  This memo describes best current practice on how devices,
networks and services should use such standards to make emergency
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From James.Winterbottom@andrew.com  Thu Jun  4 13:45:52 2009
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From: "Winterbottom, James" <James.Winterbottom@andrew.com>
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=0D=0AThanks Marc=0D=0A=0D=0A-----Original Message-----=0D=0AFrom: Marc Lin=
sner [mailto:mlinsner@cisco.com]=0D=0ASent: Thu 6/4/2009 7:22 AM=0D=0ATo: W=
interbottom, James; ecrit@ietf.org=0D=0ASubject: Re: [Ecrit] Outcome of Pho=
ne BCP hum=0D=0A=20=0D=0AAs stated in the call yesterday.=0D=0A=0D=0ATaken =
from my email on April 24, 2009:=0D=0A=0D=0A"http://www.ietf.org/internet-d=
rafts/draft-ietf-ecrit-phonebcp-09.txt=0D=0A=0D=0AAt the San Francisco meet=
ing and ensuing list threads, the last issue around=0D=0APhoneBCP was wheth=
er or not to include an Oapplicability statement=B9.  The=0D=0Ahum during t=
he meeting was inconclusive.  The draft editor has included text=0D=0Ain th=
is latest version in an attempt to compromise on this issue.=0D=0A=0D=0APle=
ase review this version and respond by Friday May 1 to the list as to=0D=0A=
your acceptance of this change."=0D=0A=0D=0AA clarification on April 27, 20=
09:=0D=0A=0D=0A"This is a consolidated hum.=0D=0A=0D=0AIf you don't agree t=
hat we need an applicability statement, hum against it.=0D=0A=0D=0AIf you a=
gree that we need an applicability statement, but don't like the=0D=0Acurre=
nt text, hum against it.=0D=0A=0D=0AIf you agree with the statement as writ=
ten, hum for it.=0D=0A=0D=0AIf consensus is against the statement, it will =
be taken out of the draft."=0D=0A=0D=0A=0D=0AThe outcome was as follows:=0D=
=0A=0D=0A10 against the change=0D=0A4 for the change=0D=0A2 no objection to=
 the change=0D=0A=0D=0AThe chairs are reviewing this with the ADs to decide=
 the next steps.=0D=0A=0D=0A-Marc-=0D=0A=0D=0A=0D=0A=0D=0A=0D=0A=0D=0AOn 6/=
4/09 1:43 AM, "Winterbottom, James" <James.Winterbottom@andrew.com>=0D=0Awr=
ote:=0D=0A=0D=0A> Hello,=0D=0A>=20=0D=0A> Several weeks ago now Marc called=
 for a hum on the need and wording of=0D=0A> applicability in the phone BCP=
 document.=0D=0A>=20=0D=0A> I believe that after clarification of what the =
hum was actually for=0D=0A> there was a general consensus that there was no=
 need for such a=0D=0A> statement, though no formal outcome was ever announ=
ced by the WG chairs.=0D=0A>=20=0D=0A> I am now extremely alarmed to find t=
hat there is list discussion on=0D=0A> altering the current wording when:=0D=
=0A> 1) Some people believe the outcome of the hum was such that no=0D=0A> =
applicability statement should be included.=0D=0A> 2) The chairs have not f=
ormally posted what the outcome was.=0D=0A>=20=0D=0A> I am formally request=
ing that no further posts on proposing new wording=0D=0A> be discussed unti=
l the chair come back with a formal outcome of the=0D=0A> previous hum.=0D=0A=
>=20=0D=0A> Cheers=0D=0A> James=0D=0A> ------------------------------------=
------------------------------------------=0D=0A> ------------------=0D=0A>=
 This message is for the designated recipient only and may=0D=0A> contain p=
rivileged, proprietary, or otherwise private information.=0D=0A> If you hav=
e received it in error, please notify the sender=0D=0A> immediately and del=
ete the original.  Any unauthorized use of=0D=0A> this email is prohibited.=0D=
=0A> ----------------------------------------------------------------------=
--------=0D=0A> ------------------=0D=0A> [mf2]=0D=0A>=20=0D=0A> __________=
_____________________________________=0D=0A> Ecrit mailing list=0D=0A> Ecri=
t@ietf.org=0D=0A> https://www.ietf.org/mailman/listinfo/ecrit=0D=0A=0D=0A=0D=
=0A=0D=0A=0D=0A------------------------------------------------------------=
------------------------------------=0D=0AThis message is for the designate=
d recipient only and may=0D=0Acontain privileged, proprietary, or otherwise=
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use of=0D=0Athis email is prohibited.=0D=0A--------------------------------=
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=0A

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From: Karl Heinz Wolf <khwolf1@gmail.com>
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Subject: Re: [Ecrit] FW: New Version Notification for draft-ietf-ecrit-phonebcp-11
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Brian,
because of all the discussion on the applicability statement it seems
that you forgot to put back ED-6.
karl heinz

On Thu, Jun 4, 2009 at 7:07 PM, Brian Rosen<br@brianrosen.net> wrote:
> Okay, so -10 has an update to a reference that was a draft and is now an =
RFC, and a fix to the "inserted-by" parameter text noticed by John Elway. =
=A0-11 is the same as 10 with the "applicability" text removed.
>
> Brian
>
> -----Original Message-----
> From: IETF I-D Submission Tool [mailto:idsubmission@ietf.org]
> Sent: Thursday, June 04, 2009 1:05 PM
> To: br@brianrosen.net
> Cc: jmpolk@cisco.com
> Subject: New Version Notification for draft-ietf-ecrit-phonebcp-11
>
>
> A new version of I-D, draft-ietf-ecrit-phonebcp-11.txt has been successfu=
ly submitted by Brian Rosen and posted to the IETF repository.
>
> Filename: =A0 =A0 =A0 =A0draft-ietf-ecrit-phonebcp
> Revision: =A0 =A0 =A0 =A011
> Title: =A0 =A0 =A0 =A0 =A0 Best Current Practice for Communications Servi=
ces in support of Emergency Calling
> Creation_date: =A0 2009-06-04
> WG ID: =A0 =A0 =A0 =A0 =A0 ecrit
> Number_of_pages: 45
>
> Abstract:
> The IETF and other standards organization have efforts targeted at
> standardizing various aspects of placing emergency calls on IP
> networks. =A0This memo describes best current practice on how devices,
> networks and services should use such standards to make emergency
> calls.
>
>
>
> The IETF Secretariat.
>
>
> _______________________________________________
> Ecrit mailing list
> Ecrit@ietf.org
> https://www.ietf.org/mailman/listinfo/ecrit
>

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The list of PARs under consideration at the July plenary has been posted:
http://www.ieee802.org/PARs.shtml

This includes a new standard for support of emergency services:
http://www.ieee802.org/PARs/2009-07/21-09-0027-06-00es-emergency-services-p=
ar-and-5c.doc




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From: "Romascanu, Dan (Dan)" <dromasca@avaya.com>
To: "Bernard Aboba" <bernard_aboba@hotmail.com>, <ecrit@ietf.org>
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Subject: Re: [Ecrit] IEEE 802 considers New Standard for Support of Emergency Services (IEEE 802.21.1)
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Bernard,
=20
Did they decide to go ahead with this? Your May report indicated I think
that the PAR was taken off the agenda for the time being - it's back
now? or am I confused and confusing?=20
=20
Dan
=20


________________________________

	From: ecrit-bounces@ietf.org [mailto:ecrit-bounces@ietf.org] On
Behalf Of Bernard Aboba
	Sent: Thursday, June 11, 2009 4:44 PM
	To: ecrit@ietf.org
	Subject: [Ecrit] IEEE 802 considers New Standard for Support of
Emergency Services (IEEE 802.21.1)
=09
=09
	The list of PARs under consideration at the July plenary has
been posted:
	http://www.ieee802.org/PARs.shtml
=09
	This includes a new standard for support of emergency services:
=09
http://www.ieee802.org/PARs/2009-07/21-09-0027-06-00es-emergency-service
s-par-and-5c.doc
=09
=09
=09
<http://im.live.com/Messenger/IM/Home/?source=3DEML_WLHM_GreaterGood>=20
=09


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<DIV><SPAN class=3D322332114-11062009><FONT face=3DArial=20
color=3D#0000ff>Bernard,</FONT></SPAN></DIV>
<DIV><SPAN class=3D322332114-11062009><FONT face=3DArial=20
color=3D#0000ff></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D322332114-11062009><FONT face=3DArial =
color=3D#0000ff>Did they=20
decide to go ahead with this? Your May report indicated I think that the =
PAR was=20
taken off the agenda for the time being - it's back now? or am I =
confused and=20
confusing? </FONT></SPAN></DIV>
<DIV><SPAN class=3D322332114-11062009><FONT face=3DArial=20
color=3D#0000ff></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D322332114-11062009><FONT face=3DArial=20
color=3D#0000ff>Dan</FONT></SPAN></DIV>
<DIV><SPAN class=3D322332114-11062009></SPAN>&nbsp;</DIV><BR>
<BLOCKQUOTE=20
style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px =
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  <FONT face=3DTahoma><B>From:</B> ecrit-bounces@ietf.org=20
  [mailto:ecrit-bounces@ietf.org] <B>On Behalf Of </B>Bernard=20
  Aboba<BR><B>Sent:</B> Thursday, June 11, 2009 4:44 PM<BR><B>To:</B>=20
  ecrit@ietf.org<BR><B>Subject:</B> [Ecrit] IEEE 802 considers New =
Standard for=20
  Support of Emergency Services (IEEE 802.21.1)<BR></FONT><BR></DIV>
  <DIV></DIV>The list of PARs under consideration at the July plenary =
has been=20
  posted:<BR>http://www.ieee802.org/PARs.shtml<BR><BR>This includes a =
new=20
  standard for support of emergency=20
  =
services:<BR>http://www.ieee802.org/PARs/2009-07/21-09-0027-06-00es-emerg=
ency-services-par-and-5c.doc<BR><BR><BR>
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From: Bernard Aboba <bernard_aboba@hotmail.com>
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Date: Thu, 11 Jun 2009 07:31:05 -0700
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Subject: Re: [Ecrit] IEEE 802 considers New Standard for Support of Emergency Services (IEEE 802.21.1)
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The PAR submission has been updated and it is back on the agenda for consid=
eration at the San Francisco plenary.  Presumably it will go through a simi=
lar process to the March meeting in Vancouver (e.g. review=2C discussion by=
 the IEEE 802 EC=2C etc.).=20

Subject: RE: [Ecrit] IEEE 802 considers New Standard for Support of Emergen=
cy Services (IEEE 802.21.1)
Date: Thu=2C 11 Jun 2009 16:23:12 +0200
From: dromasca@avaya.com
To: bernard_aboba@hotmail.com=3B ecrit@ietf.org
CC: iesg@ietf.org=3B iab@iab.org










Bernard=2C
=20
Did they=20
decide to go ahead with this? Your May report indicated I think that the PA=
R was=20
taken off the agenda for the time being - it's back now? or am I confused a=
nd=20
confusing?=20
=20
Dan
=20


 =20
 =20
  From: ecrit-bounces@ietf.org=20
  [mailto:ecrit-bounces@ietf.org] On Behalf Of Bernard=20
  Aboba
Sent: Thursday=2C June 11=2C 2009 4:44 PM
To:=20
  ecrit@ietf.org
Subject: [Ecrit] IEEE 802 considers New Standard for=20
  Support of Emergency Services (IEEE 802.21.1)


  The list of PARs under consideration at the July plenary has been=20
  posted:
http://www.ieee802.org/PARs.shtml

This includes a new=20
  standard for support of emergency=20
  services:
http://www.ieee802.org/PARs/2009-07/21-09-0027-06-00es-emergency-services-p=
ar-and-5c.doc



 =20
   =20
   =20
     =20

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The PAR submission has been updated and it is back on the agenda for consid=
eration at the San Francisco plenary.&nbsp=3B Presumably it will go through=
 a similar process to the March meeting in Vancouver (e.g. review=2C discus=
sion by the IEEE 802 EC=2C etc.). <br><br><hr id=3D"stopSpelling">Subject: =
RE: [Ecrit] IEEE 802 considers New Standard for Support of Emergency Servic=
es (IEEE 802.21.1)<br>Date: Thu=2C 11 Jun 2009 16:23:12 +0200<br>From: drom=
asca@avaya.com<br>To: bernard_aboba@hotmail.com=3B ecrit@ietf.org<br>CC: ie=
sg@ietf.org=3B iab@iab.org<br><br>




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<div><span class=3D"EC_322332114-11062009"><font color=3D"#0000ff" face=3D"=
Arial">Bernard=2C</font></span></div>
<div><span class=3D"EC_322332114-11062009"><font color=3D"#0000ff" face=3D"=
Arial"></font></span>&nbsp=3B</div>
<div><span class=3D"EC_322332114-11062009"><font color=3D"#0000ff" face=3D"=
Arial">Did they=20
decide to go ahead with this? Your May report indicated I think that the PA=
R was=20
taken off the agenda for the time being - it's back now? or am I confused a=
nd=20
confusing? </font></span></div>
<div><span class=3D"EC_322332114-11062009"><font color=3D"#0000ff" face=3D"=
Arial"></font></span>&nbsp=3B</div>
<div><span class=3D"EC_322332114-11062009"><font color=3D"#0000ff" face=3D"=
Arial">Dan</font></span></div>
<div><span class=3D"EC_322332114-11062009"></span>&nbsp=3B</div><br>
<blockquote style=3D"border-left: 2px solid rgb(0=2C 0=2C 255)=3B padding-l=
eft: 5px=3B margin-left: 5px=3B margin-right: 0px=3B">
  <div class=3D"EC_OutlookMessageHeader" dir=3D"ltr" align=3D"left" lang=3D=
"en-us">
  <hr>
  <font face=3D"Tahoma"><b>From:</b> ecrit-bounces@ietf.org=20
  [mailto:ecrit-bounces@ietf.org] <b>On Behalf Of </b>Bernard=20
  Aboba<br><b>Sent:</b> Thursday=2C June 11=2C 2009 4:44 PM<br><b>To:</b>=20
  ecrit@ietf.org<br><b>Subject:</b> [Ecrit] IEEE 802 considers New Standard=
 for=20
  Support of Emergency Services (IEEE 802.21.1)<br></font><br></div>
  <div></div>The list of PARs under consideration at the July plenary has b=
een=20
  posted:<br>http://www.ieee802.org/PARs.shtml<br><br>This includes a new=20
  standard for support of emergency=20
  services:<br>http://www.ieee802.org/PARs/2009-07/21-09-0027-06-00es-emerg=
ency-services-par-and-5c.doc<br><br><br>
  <table style=3D"border-top: 1px solid black=3B font-weight: bold=3B font-=
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From: "Romascanu, Dan (Dan)" <dromasca@avaya.com>
To: "Bernard Aboba" <bernard_aboba@hotmail.com>, <ecrit@ietf.org>
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Thank you - so I believe it's time for review and comments.=20
=20
Dan
=20


________________________________

	From: iesg-bounces@ietf.org [mailto:iesg-bounces@ietf.org] On
Behalf Of Bernard Aboba
	Sent: Thursday, June 11, 2009 5:31 PM
	To: Romascanu, Dan (Dan); ecrit@ietf.org
	Cc: iab@iab.org; iesg@ietf.org
	Subject: RE: [Ecrit] IEEE 802 considers New Standard for Support
ofEmergency Services (IEEE 802.21.1)
=09
=09
	The PAR submission has been updated and it is back on the agenda
for consideration at the San Francisco plenary.  Presumably it will go
through a similar process to the March meeting in Vancouver (e.g.
review, discussion by the IEEE 802 EC, etc.).=20
=09
=09
________________________________

	Subject: RE: [Ecrit] IEEE 802 considers New Standard for Support
of Emergency Services (IEEE 802.21.1)
	Date: Thu, 11 Jun 2009 16:23:12 +0200
	From: dromasca@avaya.com
	To: bernard_aboba@hotmail.com; ecrit@ietf.org
	CC: iesg@ietf.org; iab@iab.org
=09
=09
	Bernard,
	=20
	Did they decide to go ahead with this? Your May report indicated
I think that the PAR was taken off the agenda for the time being - it's
back now? or am I confused and confusing?=20
	=20
	Dan
	=20


________________________________

		From: ecrit-bounces@ietf.org
[mailto:ecrit-bounces@ietf.org] On Behalf Of Bernard Aboba
		Sent: Thursday, June 11, 2009 4:44 PM
		To: ecrit@ietf.org
		Subject: [Ecrit] IEEE 802 considers New Standard for
Support of Emergency Services (IEEE 802.21.1)
	=09
	=09
		The list of PARs under consideration at the July plenary
has been posted:
		http://www.ieee802.org/PARs.shtml
	=09
		This includes a new standard for support of emergency
services:
=09
http://www.ieee802.org/PARs/2009-07/21-09-0027-06-00es-emergency-service
s-par-and-5c.doc
	=09
	=09
	=09
<http://im.live.com/Messenger/IM/Home/?source=3DEML_WLHM_GreaterGood>=20
=09


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<META http-equiv=3DContent-Type content=3D"text/html; =
charset=3Dus-ascii">
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<BODY class=3Dhmmessage>
<DIV><SPAN class=3D106505117-11062009><FONT face=3DArial =
color=3D#0000ff>Thank you -=20
so I believe it's time for review and comments. </FONT></SPAN></DIV>
<DIV><SPAN class=3D106505117-11062009><FONT face=3DArial=20
color=3D#0000ff></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D106505117-11062009><FONT face=3DArial=20
color=3D#0000ff>Dan</FONT></SPAN></DIV>
<DIV><SPAN class=3D106505117-11062009></SPAN>&nbsp;</DIV><BR>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px =
solid; MARGIN-RIGHT: 0px">
  <DIV class=3DOutlookMessageHeader lang=3Den-us dir=3Dltr align=3Dleft>
  <HR tabIndex=3D-1>
  <FONT face=3DTahoma><B>From:</B> iesg-bounces@ietf.org=20
  [mailto:iesg-bounces@ietf.org] <B>On Behalf Of </B>Bernard=20
  Aboba<BR><B>Sent:</B> Thursday, June 11, 2009 5:31 PM<BR><B>To:</B> =
Romascanu,=20
  Dan (Dan); ecrit@ietf.org<BR><B>Cc:</B> iab@iab.org;=20
  iesg@ietf.org<BR><B>Subject:</B> RE: [Ecrit] IEEE 802 considers New =
Standard=20
  for Support ofEmergency Services (IEEE 802.21.1)<BR></FONT><BR></DIV>
  <DIV></DIV>The PAR submission has been updated and it is back on the =
agenda=20
  for consideration at the San Francisco plenary.&nbsp; Presumably it =
will go=20
  through a similar process to the March meeting in Vancouver (e.g. =
review,=20
  discussion by the IEEE 802 EC, etc.). <BR><BR>
  <HR id=3DstopSpelling>
  Subject: RE: [Ecrit] IEEE 802 considers New Standard for Support of =
Emergency=20
  Services (IEEE 802.21.1)<BR>Date: Thu, 11 Jun 2009 16:23:12 =
+0200<BR>From:=20
  dromasca@avaya.com<BR>To: bernard_aboba@hotmail.com; =
ecrit@ietf.org<BR>CC:=20
  iesg@ietf.org; iab@iab.org<BR><BR>
  <STYLE>.ExternalClass .EC_hmmessage P {
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  <DIV><SPAN class=3DEC_322332114-11062009><FONT face=3DArial=20
  color=3D#0000ff>Bernard,</FONT></SPAN></DIV>
  <DIV><SPAN class=3DEC_322332114-11062009><FONT face=3DArial=20
  color=3D#0000ff></FONT></SPAN>&nbsp;</DIV>
  <DIV><SPAN class=3DEC_322332114-11062009><FONT face=3DArial =
color=3D#0000ff>Did they=20
  decide to go ahead with this? Your May report indicated I think that =
the PAR=20
  was taken off the agenda for the time being - it's back now? or am I =
confused=20
  and confusing? </FONT></SPAN></DIV>
  <DIV><SPAN class=3DEC_322332114-11062009><FONT face=3DArial=20
  color=3D#0000ff></FONT></SPAN>&nbsp;</DIV>
  <DIV><SPAN class=3DEC_322332114-11062009><FONT face=3DArial=20
  color=3D#0000ff>Dan</FONT></SPAN></DIV>
  <DIV><SPAN class=3DEC_322332114-11062009></SPAN>&nbsp;</DIV><BR>
  <BLOCKQUOTE=20
  style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: =
rgb(0,0,255) 2px solid; MARGIN-RIGHT: 0px">
    <DIV class=3DEC_OutlookMessageHeader lang=3Den-us dir=3Dltr =
align=3Dleft>
    <HR>
    <FONT face=3DTahoma><B>From:</B> ecrit-bounces@ietf.org=20
    [mailto:ecrit-bounces@ietf.org] <B>On Behalf Of </B>Bernard=20
    Aboba<BR><B>Sent:</B> Thursday, June 11, 2009 4:44 PM<BR><B>To:</B>=20
    ecrit@ietf.org<BR><B>Subject:</B> [Ecrit] IEEE 802 considers New =
Standard=20
    for Support of Emergency Services (IEEE =
802.21.1)<BR></FONT><BR></DIV>
    <DIV></DIV>The list of PARs under consideration at the July plenary =
has been=20
    posted:<BR>http://www.ieee802.org/PARs.shtml<BR><BR>This includes a =
new=20
    standard for support of emergency=20
    =
services:<BR>http://www.ieee802.org/PARs/2009-07/21-09-0027-06-00es-emerg=
ency-services-par-and-5c.doc<BR><BR><BR>
    <TABLE=20
    style=3D"BORDER-TOP: black 1px solid; FONT-WEIGHT: bold; =
FONT-FAMILY: 'Segoe UI',Tahoma,san-serif">
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      <TR>
        <TD><A=20
          style=3D"FONT-SIZE: 9pt; COLOR: rgb(1,132,203); =
TEXT-DECORATION: none"=20
          =
href=3D"http://im.live.com/Messenger/IM/Home/?source=3DEML_WLHM_GreaterGo=
od"><SPAN=20
          style=3D"PADDING-RIGHT: 24px; PADDING-LEFT: 24px; FONT-SIZE: =
8pt; PADDING-BOTTOM: 0px; COLOR: rgb(63,181,85); PADDING-TOP: 0px; =
TEXT-DECORATION: =
underline"></SPAN></A><BR></TD></TR></TBODY></TABLE></BLOCKQUOTE></BLOCKQ=
UOTE></BODY></HTML>

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From rbarnes@bbn.com  Fri Jun 12 08:03:34 2009
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Looks like Apple are looking into some of the issues raised on this 
list, e.g., premature disconnect.

<http://www.macrumors.com/2009/06/11/apple-researching-methods-for-facilitating-emergency-phone-calls/>

From g.caron@bell.ca  Fri Jun 12 08:20:01 2009
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From: <g.caron@bell.ca>
To: <rbarnes@bbn.com>, <ecrit@ietf.org>
Date: Fri, 12 Jun 2009 11:19:16 -0400
Thread-Topic: [Ecrit] Apple Researching Methods for Facilitating Emergency Phone Calls
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Thanks for digging this out Richard. Very informative.

Maybe control of premature disconnect is not so silly after all.

The iPhone example clearly depicts the power of a GUI solution and seems to=
 indicate its technical viability in a wireless environment.

Hopefully the patent will not impede the ability for this group to continue=
 exploring this topic further (maybe a non-GUI approach seems more palatabl=
e now :-).

Guy
-----Message d'origine-----
De : ecrit-bounces@ietf.org [mailto:ecrit-bounces@ietf.org] De la part de R=
ichard Barnes
Envoy=E9 : 12 juin 2009 11:04
=C0 : ECRIT
Objet : [Ecrit] Apple Researching Methods for Facilitating Emergency Phone =
Calls

Looks like Apple are looking into some of the issues raised on this
list, e.g., premature disconnect.

<http://www.macrumors.com/2009/06/11/apple-researching-methods-for-facilita=
ting-emergency-phone-calls/>
_______________________________________________
Ecrit mailing list
Ecrit@ietf.org
https://www.ietf.org/mailman/listinfo/ecrit

From jmpolk@cisco.com  Fri Jun 12 10:13:22 2009
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Subject: Re: [Ecrit] Apple Researching Methods for Facilitating Emergency Phone Calls
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filed only in December of 2007, learning that several pieces 
mentioned in this description have been discussed way before December 
2007 on this open list - it will be interesting whether many parts 
*can* survive a challenge.

that said, there are a few nuggets mentioned that I have not seen or 
heard before that make this interesting...

Thanks for finding this Richard!

James

At 10:03 AM 6/12/2009, Richard Barnes wrote:
>Looks like Apple are looking into some of the issues raised on this 
>list, e.g., premature disconnect.
>
><http://www.macrumors.com/2009/06/11/apple-researching-methods-for-facilitating-emergency-phone-calls/>
>_______________________________________________
>Ecrit mailing list
>Ecrit@ietf.org
>https://www.ietf.org/mailman/listinfo/ecrit


From RMarshall@telecomsys.com  Tue Jun 16 16:00:57 2009
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From: "Roger Marshall" <RMarshall@telecomsys.com>
To: "ECRIT" <ecrit@ietf.org>
Subject: [Ecrit] ECRIT Interim Meeting Notes - ECRIT Conf Call June 3, 2009
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Please find the raw minutes from our last ECRIT Interim meeting, June
03, 2009, inline. =20

=20

Do send any corrections my way, in case of errors, etc.

=20

I've also attached as a MS Word file, in case of formatting difficulties
- which may or may not make it through the list server.

=20

-roger marshall.

ECRIT Secretary

rmarshall@telecomsys.com

=20

***

=20

ECRIT Interim Meeting

Date: Jun 03, 2009

Minutes by: R. Marshall

Chairs: Marc Linsner & Hannes Tschofenig

Wiki page at:

http://trac.tools.ietf.org/wg/ecrit/trac/wiki

Local start time: 10:06 AM Pacific

Agenda:

=20

Attendees:

James Polk

Keith Drage

Hannes Tschofenig

Greg Burdett

Gabor Bajko

John Elwell

Karl Heinz

Randall Gellens

Richard Barnes

Robert Sparks

Roger Marshall

Spencer Dawkins

Marc Linsner

Brian Rosen

Cullen Jennings

Milan Patel

Dan Romascanu

=20

Webex Session:

Notes of Meeting Discussion:

SLIDE 1-4...

SLIDE 5 - review the status of drafts...

Sos-parameter

Lost-sync WGLC is complete, waiting for a couple of implementers
feedback since it is an exp

Location Hiding

Specifying Holes in LoST service boundaries (correction: Cullen to talk
to Martin Thomson)

(more details are in the link listed in the slide 5)

James: Why isn't there a milestone for RPH here?

Hannes: Discussion with AD's - in short, we need to have a wg
rechartering.

James: yes, for -00, but I'm on -05

Cullen: not unique circumstance, some drafts are not going to go forward
until rechartering happens.

James: Other drafts (after) have been brought in.

Cullen: I'm a little lost myself on RPH - I didn't realize that we
needed to recharter for RPH.

James: I don't think we need to update the charter.

Cullen: IESG will have to approve the recharter.

Keith: Which situation are we now in - I believe the wg asked for a
milestone addition at Dublin

Hannes: RPH is listed as from October, other drafts from June - it was
up to Jon and Cullen as to whether these fit within the existing
charter, they were considered within the charter.

...Skip to info in mail message sent out with milestone update (see
SLIDE 9)

James: Other drafts seem to be sneeking in.

Cullen: What do you mean.  We have the charter, then there is the goals
& milestones, then there is the Internet drafts.

Keith: One of the AD's (presumably) will give us the determination of
whether this draft is within scope, or not.

Cullen: Some hesitancy here (on the phone) in light of new AD's coming
in... If Jon said it was within scope, then I'll go with it, but I want
to go back and look at what was decided.

Hannes: Recounting some history, when asked, Jon may have agreed to
allow additional drafts to be submitted, possibly because the phonebcp &
framework draft completion was right around the corner.

Hannes: Secondly, there was a milestones listing mistake, which is why I
asked to have the milestones updated.

Brian: I think that we're only waiting on one critical issue - the
applicability statement - the other issues, I don't think are critical
enough to hold up the document.

=20

Next Discussion Item - PhoneBCP and the text added based on SF ECRIT
discussion:

Hannes: SLIDE 6, Marc asked for consensus, but has noted that there is
no clear consensus.

James: Just one or two people who don't want to take it out.

Brian: More than just one or two.

Brian: It's a chair call, as  to whether there is rough consensus.

Hannes: The question in the consensus call that Marc issued was not
whether people agreed with the applicability statement, but rather is
the present wording acceptable.

Randy: I'm saying, ask a different question - we have a draft out there,
can that version go forward?

Keith: The version with the statement is fine with me, could be
clarified, but has a caveat.

Hannes:  Maybe we should resubmit the document without the statement,=20

Brian: As you have to do is revert.

Randy: We should ask whether the current version of the draft can go
forward.

Hannes: what is the previous version

Randy: If we go back, we know from SF that there are problems with the
previous version

Hannes: You believe there are problems...

[skip]

Marc: Current version is -09, we could ask the simple question, should
we ask do we go forward with -09 or -08?

Randy: But, -08 is the same as in SF, and we will get back into the
controversy again as in SF.

Hannes: We can't avoid the controversy,=20

Randy: Let's not call it an applicability statement, it's just a note of
text.

Marc:  We've got ____ people who didn't like the changes from -08 to
-09.

Randy: My point was that the question as worded, ...

Marc: My proposal of 3 minutes ago...=20

Brian: I think I mis-spoke, since there are other changes as well.
You'd have to have a more detailed question to differentiate the two.

Hannes:  The compromise text was premature, done by a small group.

Brian: It was done on the list - not done by a small group of people.

Cullen: Consensus is something taken at a point in time, and over time,
may change - a good thing - since that's how agreements are reached...
it sounds like the chairs are saying, it sounds like we didn't have
consensus at that time.

Randy: We had a lot of debate on the mailing list, yes during the ietf
meeting, but also in the week following.

Randy: I think there was consensus that people weren't content with -08

Hannes:

Marc: (reading the consensus question from email)

Marc: that vote, if by plurality was 10 for, ________ against, etc.

Hannes: If there is something in the document that prevent ES from
working in certain environments, then we should discuss it, though it
comes a little late...

Keith: It's not late, these 3GPP documents have been available for a few
years.

Hannes:  3GPP doesn't put these kinds of statements (e.g., about IETF
shortcomings) in their documents

Randy: I think we've got some emotional baggage tied in with this.

Richard: It doesn't say, "X is a situation, in which things won't work"

Hannes: (reading the applicability statement)=20

Randy: All it does it to alert the reader

James: This is applies to IP networks

Keith: Who says that 3GPP is not an IP network

Randy: It's not an applicability statement, doesn't limit a solution in
any way.  Most documents in the IETF are self-limiting.  This document
sets itself up as being "the single way" that all emergency calls
happen.

Hannes: The primary focus of this document is around access providers
providing location, and doesn't take into consideration other models,
such as the communication service providers to provide, etc.

Richard: This document allows for other stuff, but just doesn't map it
out...

Hannes: There's a big difference, it doesn't talk about emergency
registration, etc.

Keith: You wouldn't get a 3GPP LoST server, for example...

Keith: A Service Provider implementing the 3GPP standard, wouldn't
implement a LoST server, because it doesn't mention one.

Marc: (voice breaking up)

Richard: What do change in the document to eliminate the notion that
other models can exist?

Keith: To a certain extent, some have suggested that tried that,=20

Richard: If I recall, Stephen (Edge's) comments were fairly general, not
specifically pointed changed suggested.  Do you think this kind of thing
can be done?

Keith: I'd have to go back through it.

Randy: I'd have to do another detailed read of the document.

Spencer: I think the thread indicated that... 3GPP=20

Keith: Sometimes CT1 vs. SA2 need pointed questions asked.

Hannes: We've had many conversations with 3GPP, it depends on which
questions are asked... which group.

Brian: 3GPP...

Hannes: I think it's even worse than that, in that some of the
communication models are very different.  E.g., the split of services
vs. being provided by the same provider.

Hannes: What is different to the enterprise environment is the
interaction between roaming and local...

Brian: We should be asking, Is it all right that the service provider
queries LoST, if it's not all right...

Keith: not the question - the question I am raising, is that if
different addressing info is used in a 3GPP network, since 3GPP looks
for specific call marking, and the call may not get to the PSAP at all.

Brian: The main difference is due to the location being done by the UA
or not.

Roger: It's a difference between "core" vs. "edge" routing based on
location.

Marc: If we exclude all other standards development organizations out of
this, then it's not overarching.

Keith: I'd have to go back and look at the document.

Marc: Can you look at it within a week?

Keith: Other ietf documents are explicit as to what they apply to...

Randy: This statement is helpful, is not harmful to have it here.

Hannes: But if it's not a big deal, why do you care so much about this
text?

Keith: All docs have a scope, what does the document do, and what is the
document applicable to.

Hannes: Most of the documents are written in such a way as to be generic
building blocks... maybe I'm wrong about this assumption, but if what
you point out the UA LoST lookup problem is not adequately covered,
maybe we should read through again, and makes sure the document says
what it needs to say.  My opinion is that this is what the document
says...

Brian: The underlying protocols support either model where a UA gets
location & queries LoST or a Proxy gets location & queries LoST, but the
phonebcp doesn't really talk about the latter, other than in a fail-case
scenario.

Roger: Phonebcp is really just a profile for edge-based routing based on
location, there is no comparable profile document that describes a
proxy-inserted location & routing model architecture.

Brian: Yes, but the underlying protocols support it.

Roger: yes.

Marc: Doesn't the title PhoneBCP suggest the edge context?

Brian: As to the applicability statement, I don't think this wording
really matters.

Keith: I've already referred to wording in the abstract that gives the
impression of a universal solution.

[skip]

Hannes:=20

Randy: Would like the question asked - are people happy with the
existing document?

Marc: If we could have a -10 w/o the statement, then ask do you (wg)
want -09 or -10, would that work?

Randy: No, I don't think so.

Randy: Ask, given that other documents are being held up, is the present
document acceptable?

Cullen: you can't leave it binary then, it either needs...

James: Ask the question, do you want something, but not what's in -09?

John: I think that James' suggestion could break the (apparent)
deadlock.

Richard:  suggest a rev -10 w/o text - two independent consensus calls.

Randy: There is a difference between a preference and a strong
objection.

Brian: ok, suggest asking the question, who is strongly opposed to -09
and who is strongly opposed to -10?

James: does that take into consideration whether people want something,
but something different?

Brian: no,

James: right, then it becomes a two-step process.

James: I strongly oppose the suggestions.

Brian: you need to start with something non-prejudiced.

Marc: I will discuss with the AD's.

Summary: NO CLEAR CONSENSUS REACHED

/end of mtg. at 11:48 AM Pacific

=20


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<p class=3DMsoNormal><span style=3D'font-size:11.0pt;font-family:"Calibri",=
"sans-serif";
color:#1F497D'>Please find the raw minutes from our last ECRIT Interim meet=
ing,
June 03, 2009, inline.&nbsp; <o:p></o:p></span></p>

<p class=3DMsoNormal><span style=3D'font-size:11.0pt;font-family:"Calibri",=
"sans-serif";
color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=3DMsoNormal><span style=3D'font-size:11.0pt;font-family:"Calibri",=
"sans-serif";
color:#1F497D'>Do send any corrections my way, in case of errors, etc.<o:p>=
</o:p></span></p>

<p class=3DMsoNormal><span style=3D'font-size:11.0pt;font-family:"Calibri",=
"sans-serif";
color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=3DMsoNormal><span style=3D'font-size:11.0pt;font-family:"Calibri",=
"sans-serif";
color:#1F497D'>I&#8217;ve also attached as a MS Word file, in case of forma=
tting
difficulties &#8211; which may or may not make it through the list server.<=
o:p></o:p></span></p>

<p class=3DMsoNormal><span style=3D'font-size:11.0pt;font-family:"Calibri",=
"sans-serif";
color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=3DMsoNormal><span style=3D'font-size:11.0pt;font-family:"Calibri",=
"sans-serif";
color:#1F497D'>-roger marshall.<o:p></o:p></span></p>

<p class=3DMsoNormal><span style=3D'font-size:11.0pt;font-family:"Calibri",=
"sans-serif";
color:#1F497D'>ECRIT Secretary<o:p></o:p></span></p>

<p class=3DMsoNormal><span style=3D'font-size:11.0pt;font-family:"Calibri",=
"sans-serif";
color:#1F497D'>rmarshall@telecomsys.com<o:p></o:p></span></p>

<p class=3DMsoNormal><span style=3D'font-size:11.0pt;font-family:"Calibri",=
"sans-serif";
color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=3DMsoNormal><span style=3D'font-size:11.0pt;font-family:"Calibri",=
"sans-serif";
color:#1F497D'>***<o:p></o:p></span></p>

<p class=3DMsoNormal><span style=3D'font-size:11.0pt;font-family:"Calibri",=
"sans-serif";
color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=3DMsoNormal>ECRIT Interim Meeting<o:p></o:p></p>

<p class=3DMsoNormal>Date: Jun 03, 2009<o:p></o:p></p>

<p class=3DMsoNormal>Minutes by: R. Marshall<o:p></o:p></p>

<p class=3DMsoNormal>Chairs: Marc Linsner &amp; Hannes Tschofenig<o:p></o:p=
></p>

<p class=3DMsoNormal>Wiki page at:<o:p></o:p></p>

<p class=3DMsoNormal><a href=3D"http://trac.tools.ietf.org/wg/ecrit/trac/wi=
ki">http://trac.tools.ietf.org/wg/ecrit/trac/wiki</a><o:p></o:p></p>

<p class=3DMsoNormal>Local start time: 10:06 AM Pacific<o:p></o:p></p>

<p class=3DMsoNormal>Agenda:<o:p></o:p></p>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

<p class=3DMsoNormal>Attendees:<o:p></o:p></p>

<p class=3DMsoNormal>James Polk<o:p></o:p></p>

<p class=3DMsoNormal>Keith Drage<o:p></o:p></p>

<p class=3DMsoNormal>Hannes Tschofenig<o:p></o:p></p>

<p class=3DMsoNormal>Greg Burdett<o:p></o:p></p>

<p class=3DMsoNormal>Gabor Bajko<o:p></o:p></p>

<p class=3DMsoNormal>John Elwell<o:p></o:p></p>

<p class=3DMsoNormal>Karl Heinz<o:p></o:p></p>

<p class=3DMsoNormal>Randall Gellens<o:p></o:p></p>

<p class=3DMsoNormal>Richard Barnes<o:p></o:p></p>

<p class=3DMsoNormal>Robert Sparks<o:p></o:p></p>

<p class=3DMsoNormal>Roger Marshall<o:p></o:p></p>

<p class=3DMsoNormal>Spencer Dawkins<o:p></o:p></p>

<p class=3DMsoNormal>Marc Linsner<o:p></o:p></p>

<p class=3DMsoNormal>Brian Rosen<o:p></o:p></p>

<p class=3DMsoNormal>Cullen Jennings<o:p></o:p></p>

<p class=3DMsoNormal>Milan Patel<o:p></o:p></p>

<p class=3DMsoNormal>Dan Romascanu<o:p></o:p></p>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

<p class=3DMsoNormal>Webex Session:<o:p></o:p></p>

<p class=3DMsoNormal>Notes of Meeting Discussion:<o:p></o:p></p>

<p class=3DMsoNormal>SLIDE 1-4&#8230;<o:p></o:p></p>

<p class=3DMsoNormal>SLIDE 5 &#8211; review the status of drafts&#8230;<o:p=
></o:p></p>

<p class=3DMsoNormal>Sos-parameter<o:p></o:p></p>

<p class=3DMsoNormal>Lost-sync WGLC is complete, waiting for a couple of
implementers feedback since it is an exp<o:p></o:p></p>

<p class=3DMsoNormal>Location Hiding<o:p></o:p></p>

<p class=3DMsoNormal>Specifying Holes in LoST service boundaries (correctio=
n:
Cullen to talk to Martin Thomson)<o:p></o:p></p>

<p class=3DMsoNormal>(more details are in the link listed in the slide 5)<o=
:p></o:p></p>

<p class=3DMsoNormal>James: Why isn&#8217;t there a milestone for RPH here?=
<o:p></o:p></p>

<p class=3DMsoNormal>Hannes: Discussion with AD&#8217;s &#8211; in short, w=
e need
to have a wg rechartering.<o:p></o:p></p>

<p class=3DMsoNormal>James: yes, for -00, but I&#8217;m on -05<o:p></o:p></=
p>

<p class=3DMsoNormal>Cullen: not unique circumstance, some drafts are not g=
oing
to go forward until rechartering happens.<o:p></o:p></p>

<p class=3DMsoNormal>James: Other drafts (after) have been brought in.<o:p>=
</o:p></p>

<p class=3DMsoNormal>Cullen: I&#8217;m a little lost myself on RPH &#8211; I
didn&#8217;t realize that we needed to recharter for RPH.<o:p></o:p></p>

<p class=3DMsoNormal>James: I don&#8217;t think we need to update the chart=
er.<o:p></o:p></p>

<p class=3DMsoNormal>Cullen: IESG will have to approve the recharter.<o:p><=
/o:p></p>

<p class=3DMsoNormal>Keith: Which situation are we now in &#8211; I believe=
 the
wg asked for a milestone addition at Dublin<o:p></o:p></p>

<p class=3DMsoNormal>Hannes: RPH is listed as from October, other drafts fr=
om
June &#8211; it was up to Jon and Cullen as to whether these fit within the
existing charter, they were considered within the charter.<o:p></o:p></p>

<p class=3DMsoNormal>&#8230;Skip to info in mail message sent out with mile=
stone
update (see SLIDE 9)<o:p></o:p></p>

<p class=3DMsoNormal>James: Other drafts seem to be sneeking in.<o:p></o:p>=
</p>

<p class=3DMsoNormal>Cullen: What do you mean.&nbsp; We have the charter, t=
hen
there is the goals &amp; milestones, then there is the Internet drafts.<o:p=
></o:p></p>

<p class=3DMsoNormal>Keith: One of the AD&#8217;s (presumably) will give us=
 the
determination of whether this draft is within scope, or not.<o:p></o:p></p>

<p class=3DMsoNormal>Cullen: Some hesitancy here (on the phone) in light of=
 new
AD&#8217;s coming in&#8230; If Jon said it was within scope, then I&#8217;l=
l go
with it, but I want to go back and look at what was decided.<o:p></o:p></p>

<p class=3DMsoNormal>Hannes: Recounting some history, when asked, Jon may h=
ave
agreed to allow additional drafts to be submitted, possibly because the
phonebcp &amp; framework draft completion was right around the corner.<o:p>=
</o:p></p>

<p class=3DMsoNormal>Hannes: Secondly, there was a milestones listing mista=
ke,
which is why I asked to have the milestones updated.<o:p></o:p></p>

<p class=3DMsoNormal>Brian: I think that we&#8217;re only waiting on one cr=
itical
issue &#8211; the applicability statement &#8211; the other issues, I
don&#8217;t think are critical enough to hold up the document.<o:p></o:p></=
p>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

<p class=3DMsoNormal>Next Discussion Item &#8211; PhoneBCP and the text add=
ed
based on SF ECRIT discussion:<o:p></o:p></p>

<p class=3DMsoNormal>Hannes: SLIDE 6, Marc asked for consensus, but has not=
ed
that there is no clear consensus.<o:p></o:p></p>

<p class=3DMsoNormal>James: Just one or two people who don&#8217;t want to =
take
it out.<o:p></o:p></p>

<p class=3DMsoNormal>Brian: More than just one or two.<o:p></o:p></p>

<p class=3DMsoNormal>Brian: It&#8217;s a chair call, as&nbsp; to whether th=
ere is
rough consensus.<o:p></o:p></p>

<p class=3DMsoNormal>Hannes: The question in the consensus call that Marc i=
ssued
was not whether people agreed with the applicability statement, but rather =
is
the present wording acceptable.<o:p></o:p></p>

<p class=3DMsoNormal>Randy: I&#8217;m saying, ask a different question &#82=
11; we
have a draft out there, can that version go forward?<o:p></o:p></p>

<p class=3DMsoNormal>Keith: The version with the statement is fine with me,=
 could
be clarified, but has a caveat.<o:p></o:p></p>

<p class=3DMsoNormal>Hannes:&nbsp; Maybe we should resubmit the document wi=
thout
the statement, <o:p></o:p></p>

<p class=3DMsoNormal>Brian: As you have to do is revert.<o:p></o:p></p>

<p class=3DMsoNormal>Randy: We should ask whether the current version of the
draft can go forward.<o:p></o:p></p>

<p class=3DMsoNormal>Hannes: what is the previous version<o:p></o:p></p>

<p class=3DMsoNormal>Randy: If we go back, we know from SF that there are
problems with the previous version<o:p></o:p></p>

<p class=3DMsoNormal>Hannes: You believe there are problems&#8230;<o:p></o:=
p></p>

<p class=3DMsoNormal>[skip]<o:p></o:p></p>

<p class=3DMsoNormal>Marc: Current version is -09, we could ask the simple
question, should we ask do we go forward with -09 or -08?<o:p></o:p></p>

<p class=3DMsoNormal>Randy: But, -08 is the same as in SF, and we will get =
back
into the controversy again as in SF.<o:p></o:p></p>

<p class=3DMsoNormal>Hannes: We can&#8217;t avoid the controversy, <o:p></o=
:p></p>

<p class=3DMsoNormal>Randy: Let&#8217;s not call it an applicability statem=
ent,
it&#8217;s just a note of text.<o:p></o:p></p>

<p class=3DMsoNormal>Marc:&nbsp; We&#8217;ve got ____ people who didn&#8217=
;t
like the changes from -08 to -09.<o:p></o:p></p>

<p class=3DMsoNormal>Randy: My point was that the question as worded, &#823=
0;<o:p></o:p></p>

<p class=3DMsoNormal>Marc: My proposal of 3 minutes ago&#8230; <o:p></o:p><=
/p>

<p class=3DMsoNormal>Brian: I think I mis-spoke, since there are other chan=
ges as
well.&nbsp; You&#8217;d have to have a more detailed question to differenti=
ate
the two.<o:p></o:p></p>

<p class=3DMsoNormal>Hannes:&nbsp; The compromise text was premature, done =
by a
small group.<o:p></o:p></p>

<p class=3DMsoNormal>Brian: It was done on the list &#8211; not done by a s=
mall
group of people.<o:p></o:p></p>

<p class=3DMsoNormal>Cullen: Consensus is something taken at a point in tim=
e, and
over time, may change &#8211; a good thing &#8211; since that&#8217;s how
agreements are reached&#8230; it sounds like the chairs are saying, it soun=
ds
like we didn&#8217;t have consensus at that time.<o:p></o:p></p>

<p class=3DMsoNormal>Randy: We had a lot of debate on the mailing list, yes
during the ietf meeting, but also in the week following.<o:p></o:p></p>

<p class=3DMsoNormal>Randy: I think there was consensus that people weren&#=
8217;t
content with -08<o:p></o:p></p>

<p class=3DMsoNormal>Hannes:<o:p></o:p></p>

<p class=3DMsoNormal>Marc: (reading the consensus question from email)<o:p>=
</o:p></p>

<p class=3DMsoNormal>Marc: that vote, if by plurality was 10 for, ________
against, etc.<o:p></o:p></p>

<p class=3DMsoNormal>Hannes: If there is something in the document that pre=
vent
ES from working in certain environments, then we should discuss it, though =
it
comes a little late&#8230;<o:p></o:p></p>

<p class=3DMsoNormal>Keith: It&#8217;s not late, these 3GPP documents have =
been
available for a few years.<o:p></o:p></p>

<p class=3DMsoNormal>Hannes:&nbsp; 3GPP doesn&#8217;t put these kinds of
statements (e.g., about IETF shortcomings) in their documents<o:p></o:p></p>

<p class=3DMsoNormal>Randy: I think we&#8217;ve got some emotional baggage =
tied
in with this.<o:p></o:p></p>

<p class=3DMsoNormal>Richard: It doesn&#8217;t say, &#8220;X is a situation=
, in
which things won&#8217;t work&#8221;<o:p></o:p></p>

<p class=3DMsoNormal>Hannes: (reading the applicability statement) <o:p></o=
:p></p>

<p class=3DMsoNormal>Randy: All it does it to alert the reader<o:p></o:p></=
p>

<p class=3DMsoNormal>James: This is applies to IP networks<o:p></o:p></p>

<p class=3DMsoNormal>Keith: Who says that 3GPP is not an IP network<o:p></o=
:p></p>

<p class=3DMsoNormal>Randy: It&#8217;s not an applicability statement,
doesn&#8217;t limit a solution in any way.&nbsp; Most documents in the IETF=
 are
self-limiting.&nbsp; This document sets itself up as being &#8220;the single
way&#8221; that all emergency calls happen.<o:p></o:p></p>

<p class=3DMsoNormal>Hannes: The primary focus of this document is around a=
ccess
providers providing location, and doesn&#8217;t take into consideration oth=
er
models, such as the communication service providers to provide, etc.<o:p></=
o:p></p>

<p class=3DMsoNormal>Richard: This document allows for other stuff, but just
doesn&#8217;t map it out&#8230;<o:p></o:p></p>

<p class=3DMsoNormal>Hannes: There&#8217;s a big difference, it doesn&#8217=
;t
talk about emergency registration, etc.<o:p></o:p></p>

<p class=3DMsoNormal>Keith: You wouldn&#8217;t get a 3GPP LoST server, for
example&#8230;<o:p></o:p></p>

<p class=3DMsoNormal>Keith: A Service Provider implementing the 3GPP standa=
rd,
wouldn&#8217;t implement a LoST server, because it doesn&#8217;t mention on=
e.<o:p></o:p></p>

<p class=3DMsoNormal>Marc: (voice breaking up)<o:p></o:p></p>

<p class=3DMsoNormal>Richard: What do change in the document to eliminate t=
he notion
that other models can exist?<o:p></o:p></p>

<p class=3DMsoNormal>Keith: To a certain extent, some have suggested that t=
ried
that, <o:p></o:p></p>

<p class=3DMsoNormal>Richard: If I recall, Stephen (Edge&#8217;s) comments =
were
fairly general, not specifically pointed changed suggested.&nbsp; Do you th=
ink
this kind of thing can be done?<o:p></o:p></p>

<p class=3DMsoNormal>Keith: I&#8217;d have to go back through it.<o:p></o:p=
></p>

<p class=3DMsoNormal>Randy: I&#8217;d have to do another detailed read of t=
he
document.<o:p></o:p></p>

<p class=3DMsoNormal>Spencer: I think the thread indicated that&#8230; 3GPP=
 <o:p></o:p></p>

<p class=3DMsoNormal>Keith: Sometimes CT1 vs. SA2 need pointed questions as=
ked.<o:p></o:p></p>

<p class=3DMsoNormal>Hannes: We&#8217;ve had many conversations with 3GPP, =
it
depends on which questions are asked&#8230; which group.<o:p></o:p></p>

<p class=3DMsoNormal>Brian: 3GPP&#8230;<o:p></o:p></p>

<p class=3DMsoNormal>Hannes: I think it&#8217;s even worse than that, in th=
at
some of the communication models are very different.&nbsp; E.g., the split =
of
services vs. being provided by the same provider.<o:p></o:p></p>

<p class=3DMsoNormal>Hannes: What is different to the enterprise environmen=
t is
the interaction between roaming and local&#8230;<o:p></o:p></p>

<p class=3DMsoNormal>Brian: We should be asking, Is it all right that the s=
ervice
provider queries LoST, if it&#8217;s not all right&#8230;<o:p></o:p></p>

<p class=3DMsoNormal>Keith: not the question &#8211; the question I am rais=
ing,
is that if different addressing info is used in a 3GPP network, since 3GPP
looks for specific call marking, and the call may not get to the PSAP at al=
l.<o:p></o:p></p>

<p class=3DMsoNormal>Brian: The main difference is due to the location bein=
g done
by the UA or not.<o:p></o:p></p>

<p class=3DMsoNormal>Roger: It&#8217;s a difference between &#8220;core&#82=
21;
vs. &#8220;edge&#8221; routing based on location.<o:p></o:p></p>

<p class=3DMsoNormal>Marc: If we exclude all other standards development
organizations out of this, then it&#8217;s not overarching.<o:p></o:p></p>

<p class=3DMsoNormal>Keith: I&#8217;d have to go back and look at the docum=
ent.<o:p></o:p></p>

<p class=3DMsoNormal>Marc: Can you look at it within a week?<o:p></o:p></p>

<p class=3DMsoNormal>Keith: Other ietf documents are explicit as to what th=
ey
apply to&#8230;<o:p></o:p></p>

<p class=3DMsoNormal>Randy: This statement is helpful, is not harmful to ha=
ve it
here.<o:p></o:p></p>

<p class=3DMsoNormal>Hannes: But if it&#8217;s not a big deal, why do you c=
are so
much about this text?<o:p></o:p></p>

<p class=3DMsoNormal>Keith: All docs have a scope, what does the document d=
o, and
what is the document applicable to.<o:p></o:p></p>

<p class=3DMsoNormal>Hannes: Most of the documents are written in such a wa=
y as
to be generic building blocks&#8230; maybe I&#8217;m wrong about this
assumption, but if what you point out the UA LoST lookup problem is not
adequately covered, maybe we should read through again, and makes sure the
document says what it needs to say.&nbsp; My opinion is that this is what t=
he
document says&#8230;<o:p></o:p></p>

<p class=3DMsoNormal>Brian: The underlying protocols support either model w=
here a
UA gets location &amp; queries LoST or a Proxy gets location &amp; queries
LoST, but the phonebcp doesn&#8217;t really talk about the latter, other th=
an
in a fail-case scenario.<o:p></o:p></p>

<p class=3DMsoNormal>Roger: Phonebcp is really just a profile for edge-based
routing based on location, there is no comparable profile document that
describes a proxy-inserted location &amp; routing model architecture.<o:p><=
/o:p></p>

<p class=3DMsoNormal>Brian: Yes, but the underlying protocols support it.<o=
:p></o:p></p>

<p class=3DMsoNormal>Roger: yes.<o:p></o:p></p>

<p class=3DMsoNormal>Marc: Doesn&#8217;t the title PhoneBCP suggest the edge
context?<o:p></o:p></p>

<p class=3DMsoNormal>Brian: As to the applicability statement, I don&#8217;t
think this wording really matters.<o:p></o:p></p>

<p class=3DMsoNormal>Keith: I&#8217;ve already referred to wording in the
abstract that gives the impression of a universal solution.<o:p></o:p></p>

<p class=3DMsoNormal>[skip]<o:p></o:p></p>

<p class=3DMsoNormal>Hannes: <o:p></o:p></p>

<p class=3DMsoNormal>Randy: Would like the question asked &#8211; are people
happy with the existing document?<o:p></o:p></p>

<p class=3DMsoNormal>Marc: If we could have a -10 w/o the statement, then a=
sk do
you (wg) want -09 or -10, would that work?<o:p></o:p></p>

<p class=3DMsoNormal>Randy: No, I don&#8217;t think so.<o:p></o:p></p>

<p class=3DMsoNormal>Randy: Ask, given that other documents are being held =
up, is
the present document acceptable?<o:p></o:p></p>

<p class=3DMsoNormal>Cullen: you can&#8217;t leave it binary then, it either
needs&#8230;<o:p></o:p></p>

<p class=3DMsoNormal>James: Ask the question, do you want something, but not
what&#8217;s in -09?<o:p></o:p></p>

<p class=3DMsoNormal>John: I think that James&#8217; suggestion could break=
 the
(apparent) deadlock.<o:p></o:p></p>

<p class=3DMsoNormal>Richard:&nbsp; suggest a rev -10 w/o text &#8211; two
independent consensus calls.<o:p></o:p></p>

<p class=3DMsoNormal>Randy: There is a difference between a preference and =
a strong
objection.<o:p></o:p></p>

<p class=3DMsoNormal>Brian: ok, suggest asking the question, who is strongly
opposed to -09 and who is strongly opposed to -10?<o:p></o:p></p>

<p class=3DMsoNormal>James: does that take into consideration whether peopl=
e want
something, but something different?<o:p></o:p></p>

<p class=3DMsoNormal>Brian: no,<o:p></o:p></p>

<p class=3DMsoNormal>James: right, then it becomes a two-step process.<o:p>=
</o:p></p>

<p class=3DMsoNormal>James: I strongly oppose the suggestions.<o:p></o:p></=
p>

<p class=3DMsoNormal>Brian: you need to start with something non-prejudiced=
.<o:p></o:p></p>

<p class=3DMsoNormal>Marc: I will discuss with the AD&#8217;s.<o:p></o:p></=
p>

<p class=3DMsoNormal>Summary: NO CLEAR CONSENSUS REACHED<o:p></o:p></p>

<p class=3DMsoNormal>/end of mtg. at 11:48 AM Pacific<o:p></o:p></p>

<p class=3DMsoNormal><span style=3D'font-size:11.0pt;font-family:"Calibri",=
"sans-serif";
color:#1F497D'><o:p>&nbsp;</o:p></span></p>

</div>


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From RMarshall@telecomsys.com  Tue Jun 16 16:21:00 2009
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Thread-Topic: ECRIT (prior) interim meeting notes - for Webex Virtual Mtg. on  Feb 26, 2009
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From: "Roger Marshall" <RMarshall@telecomsys.com>
To: "ECRIT" <ecrit@ietf.org>
Subject: [Ecrit] ECRIT (prior) interim meeting notes - for Webex Virtual Mtg. on Feb 26, 2009
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It seems that I have neglected to distribute to the list, the raw
meeting minutes for the prior ECRIT Interim meeting, (Feb 26, 2009
meeting date).  Please find the raw minutes inline.  I've also attached
as a MS Word file, in case of formatting issues.
 <<ECRIT_Interim_Meeting_20090226.doc>>=20
Many apologies.

-roger marshall.
ECRIT Secretary
rmarshall@telecomsys.com

***

ECRIT virtual meeting notes - via Webex
Date/Time: 2/26/2009:11:00-1:00PM (Pacific, or GMT -8)


Attendees:
James Polk
Milan
Roger
Richard
Tony pike
Cullen
Gabor
Guy
Brian
Andrea
Hannes
Benard
Jon
(missed some)


Agenda: (Hannes) at link: http://trac.tools.ietf.org/wg/ecrit/trac/wiki

Agenda bashing (Marc) none heard.

Phonebcp & Framework drafts

Brian: Framework redline update - plan to release today.  No substantive
change, but asks now if we want to discuss Stephen Edge's comments -
relating to Wireless.

PhoneBCP also due out today.  Good comments from John Elwell, probably
will submit anyway, then if we need to update w/changes, we'll do that.
At least one i-spot that needs something new, not sure what to do.
Problem: if device didn't know how to do LoST, mark the call - if you
don't see a route header, then default... fine.  If you did see a route
header, how would you know...(?)  Seems like a bad idea to have every
Proxy check the route header to make sure it's a PSAP URI.

(repeat) phonebcp requirement that a proxy help out a call that didn't
get a LoST answer...  if LoST hasn't been done, then the proxy should do
it.  A good requirement, but how does a proxy ensure that this is done
rightly?

Idea is try to have a marker in the SIP message - don't know how to do
this.

Trying to avoid having to force the proxy from doing the check.

John: isn't there something already in the geolocation field as a "use
for routing" ?

Keith: what about the socks parameter (?)

Brian: 2 good comments, that we'll cosider.

Also, another point of discussion, Henry claims that you can't do a
SHOULD in an INFORMATIONAL document (downref exception).

Jon: Advise would be to change the text, to be as if it would not be
normative.  If there are things that are normative here, replicated them
(in Framework?)

Keith: what's the new status?

Brian: Framework will be INFORMATIONAL now.

Brian: Is there a document status that is BCP?  If xml2rfc has that,
then I'll change it to that

--

Notewell does apply - needs to be added to slide deck

--

Discussed Lost-sync

Brian: doesn't think this will see wide use.
Brian: Other database sync mechanisms exist,
Brian: NENA is looking at OGC's database layer mechanism to replicate

Hannes: maybe you could pass the OGC doc link to the list.

--=20

RPH - James Polk
Diagram - 01 shows insertion of "esnet" as RPH marker
Janet: short read - 7 pages w/boilerplate
Marc: any comments for James?
Brian: I want to make this a wg approved document.
James: Already is a wg document.
Hannes: We had some re-scope activity... based on our earlier hope to
submit framework document to the IESG...
Keith: Is this a wg doc or not?
Jon: technically, a wg chair is empowered to accept anything they think
s/b accepted, but there should also be an wg charter item to cover it.
So, between two views.
Keith:
Jon: If there is a wg sense to work on it - I'm not going to say don't
do it.
Jon: kinda like the same tone of "resignation"?
Hannes: need to read through the document, but basically, the diagram
looks better than what was there before.
James: describes any VSP that is a "trusted" entity with the ESInet.

--

Rough location - Richard Barnes

Discussed geo requirements
Geo - points out that the greater shape provided encompasses all of the
more precise location possibilities.
Civic location - harder to do, since filter areas may be harder to
delineate.

Roger: I think it's probably impossible to have a general solution that
works with civic location.

Brian: civic does work - you can provide a "precise" other civic
address, for example, for routing, and follow up with a more precise
location.

Hannes: hopefully, Richard can apply some of the comments made here,
before expiration date.
Richard: maybe.

--

Sos-parameter - Milan Patel

Presentation given
Questions?  No response.
Hannes: Jon & Keith, SIP expert opinion?

Keith: Haven't worked through all of part 4 yet
Milan: Wouldn't recognize the contact address as an emergency use case -
contact
Jon:=20

Hannes:  Would be good to document what would happen if not there -
error cases
Milan: yeah, good to do.

--

Brian:=20
Marc: we can come back to this one.

--

Andrea?

--

LoST Service Boundaries - Karlheinz:=20

Comments:
Hannes: Thinks its good, but see it maybe as an experimental

Richard: I think it's a good, useful draft.
Roger: It's good - another example of this could be campus security
(hole) within a greater metro region.

Brian: I don't really care - don't see any danger.
Cullen: Introduces hole, but probably already well down that road.
Brian: yeah.
Hannes: we should discuss this more on the list (?)

--=20

Premature Disconnet - Brian=20

Have asked for this to be considered, and have been told...
Seems like they (those in the IETF?) only want to solve it through UI
only.=20
Don't know what to do to move this forward.

Has been a discussion of solution paths

Keith: Did you get my comments?
Brian: Will have to go back and look - I know some were addressable,
some don't know how to handle.

Guy: (missed)

Brian: Can't do this through UI
Cullen: Do you think you could get consensus on that point, that you
can't do it through UI?
Brian: Depends on how you frame the requirement.

Hannes: maybe I should try to set up a conference call, to include
several of you who have comments or interest.
Keith: I've made some detailed comments - need to have the requirements
in front of me.

Hannes: forgetting the requirements for the moment, could we proceed
then?
Keith: The solution that mimicks the PSTN is not acceptable to me.

Guy: That is not what we're asking for.
Hannes & Marc to put together a meeting to discuss.  Should include:
Henning, Ted, Keith, Randy, Guy, Brian.
Guy: Just so I understand, this is not yet a working group item?=20
Hannes/Marc: yes, not a wg item.
Guy: In order to get there, we need to have rough consensus?

--

12:48 Pacific

Forte Lost Extensions - Andrea

Define the service URNs
Hannes: Very much in favor of this - since in many cases, IANA
mechanisms require too much effort to get extensions...  we shouldn't
have originally done this... expert review is all that's needed.  So I
would be very much in favor.
Andrea: okay.
Hannes: Keith, you had comments on the list on this?  Some proposed
wording you didn't like?
Keith: the question...?
Hannes: Are you in favor of changing IANA registration to expert review
instead.
Keith: May have thoughts regarding the hierachical structure... need to
see actual words, are they in the draft?
Keith: need to say what the rules are when we've got some kind of
hierarchy, can't just be independent.
Hannes: yeah... will have to think about that...
Andrea:
Hannes: will you be updating the document?
Andrea: yes, will update the document, wanted here to see what the
working group was thinking about this.
Hannes: could you or Henning trigger the discussion on this service urn
update? What is the plan?

? Discussion around the deadline

--

Unauthenticated Access - ?
Hannes: Henning couldn't participate, which is probably good since we're
running out of time.

--

Hannes: Was this meeting helpful?

(2 or 3 yes responses)
James: probably a good idea to have this kind of meeting 3 or 4 weeks
ahead of a f2f (for Roger) and the rest of us.

Marc: should probably have meetings for...
Brian: would agree, but not agree to having a single 2hr meeting for one
document only.

--

/end.






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<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT COLOR=3D"#1F497D" FACE=3D"Calibri">=
It</FONT></SPAN><SPAN LANG=3D"en-us"><FONT COLOR=3D"#1F497D" FACE=3D"Calibr=
i"> seems that I have neglected</FONT></SPAN><SPAN LANG=3D"en-us"><FONT COL=
OR=3D"#1F497D" FACE=3D"Calibri"> to distribute</FONT></SPAN><SPAN LANG=3D"e=
n-us"> <FONT COLOR=3D"#1F497D" FACE=3D"Calibri">to the list,</FONT></SPAN><=
SPAN LANG=3D"en-us"> <FONT COLOR=3D"#1F497D" FACE=3D"Calibri">the raw meeti=
ng minutes for the</FONT></SPAN><SPAN LANG=3D"en-us"><FONT COLOR=3D"#1F497D=
" FACE=3D"Calibri"> prior ECRIT Interim</FONT></SPAN><SPAN LANG=3D"en-us"><=
FONT COLOR=3D"#1F497D" FACE=3D"Calibri"> meeting</FONT></SPAN><SPAN LANG=3D=
"en-us"><FONT COLOR=3D"#1F497D" FACE=3D"Calibri">,</FONT></SPAN><SPAN LANG=
=3D"en-us"> <FONT COLOR=3D"#1F497D" FACE=3D"Calibri">(</FONT></SPAN><SPAN L=
ANG=3D"en-us"><FONT COLOR=3D"#1F497D" FACE=3D"Calibri">Feb 26, 2009 meeting=
</FONT></SPAN><SPAN LANG=3D"en-us"><FONT COLOR=3D"#1F497D" FACE=3D"Calibri"=
> date)</FONT></SPAN><SPAN LANG=3D"en-us"><FONT COLOR=3D"#1F497D" FACE=3D"C=
alibri">.&nbsp;</FONT></SPAN><SPAN LANG=3D"en-us"> <FONT COLOR=3D"#1F497D" =
FACE=3D"Calibri">Please find the raw minutes inline.&nbsp;</FONT></SPAN><SP=
AN LANG=3D"en-us"> <FONT COLOR=3D"#1F497D" FACE=3D"Calibri">I</FONT></SPAN>=
<SPAN LANG=3D"en-us"><FONT COLOR=3D"#1F497D" FACE=3D"Calibri">&#8217;</FONT=
></SPAN><SPAN LANG=3D"en-us"><FONT COLOR=3D"#1F497D" FACE=3D"Calibri">ve al=
so</FONT></SPAN><SPAN LANG=3D"en-us"> <FONT COLOR=3D"#1F497D" FACE=3D"Calib=
ri">attach</FONT></SPAN><SPAN LANG=3D"en-us"><FONT COLOR=3D"#1F497D" FACE=
=3D"Calibri">ed as</FONT></SPAN><SPAN LANG=3D"en-us"><FONT COLOR=3D"#1F497D=
" FACE=3D"Calibri"> a MS Word file,</FONT></SPAN><SPAN LANG=3D"en-us"> <FON=
T COLOR=3D"#1F497D" FACE=3D"Calibri">in case of formatting issues.</FONT></=
SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"><FONT FACE=3D=
"Arial" SIZE=3D2 COLOR=3D"#000000"> &lt;&lt;ECRIT_Interim_Meeting_20090226.=
doc&gt;&gt; </FONT></SPAN><SPAN LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us">=
</SPAN><SPAN LANG=3D"en-us"></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT COLOR=3D"#1F497D" FACE=3D"Calibri">=
Many apologies.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT COLOR=3D"#1F497D" FACE=3D"Calibri">=
-roger marshall.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT COLOR=3D"#1F497D" FACE=3D"Calibri">=
ECRIT Secretary</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT COLOR=3D"#1F497D" FACE=3D"Calibri">=
rmarshall@telecomsys</FONT></SPAN><SPAN LANG=3D"en-us"><FONT COLOR=3D"#1F49=
7D" FACE=3D"Calibri">.com</FONT></SPAN><SPAN LANG=3D"en-us"></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT COLOR=3D"#1F497D" FACE=3D"Calibri">=
***</FONT></SPAN><SPAN LANG=3D"en-us"></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">ECRIT virtual meeting notes - =
via Webex</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Date/Time: =
2/26/2009:11:00-1:00PM (Pacific, or GMT -8)</FONT></SPAN></P>
<BR>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Attendees:<=
/FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">James Polk<=
/FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Milan</FONT=
></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Roger</FONT=
></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Richard</FO=
NT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Tony pike</=
FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Cullen</FON=
T></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Gabor</FONT=
></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Guy</FONT><=
/SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Brian</FONT=
></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Andrea</FON=
T></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Hannes</FON=
T></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Benard</FON=
T></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Jon</FONT><=
/SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">(missed som=
e)</FONT></SPAN></P>
<BR>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Agenda: (Ha=
nnes) at link:</FONT></SPAN><SPAN LANG=3D"en-us"> </SPAN><A HREF=3D"http://=
trac.tools.ietf.org/wg/ecrit/trac/wiki"><SPAN LANG=3D"en-us"></SPAN><SPAN L=
ANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"><U><FONT COLOR=3D"#0000FF" SIZE=
=3D2 FACE=3D"Arial">http://trac.tools.ietf.org/wg/ecrit/trac/wiki</FONT></U=
></SPAN><SPAN LANG=3D"en-us"></SPAN></A><SPAN LANG=3D"en-us"></SPAN><SPAN L=
ANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Agenda bash=
ing (Marc) none heard.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Phonebcp &a=
mp; Framework drafts</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Brian: Fram=
ework redline update - plan to release today.&nbsp; No substantive change, =
but asks now if we want to discuss Stephen Edge's comments - relating to Wi=
reless.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">PhoneBCP al=
so due out today.&nbsp; Good comments from John Elwell, probably will submi=
t anyway, then if we need to update w/changes, we'll do that.&nbsp; At leas=
t one i-spot that needs something new, not sure what to do.&nbsp; Problem: =
if device didn't know how to do LoST, mark the call - if you don't see a ro=
ute header, then default&#8230; fine.&nbsp; If you did see a route header, =
how would you know&#8230;(?)&nbsp; Seems like a bad idea to have every Prox=
y check the route header to make sure it&#8217;s a PSAP URI.</FONT></SPAN><=
/P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">(repeat) ph=
onebcp requirement that a proxy help out a call that didn't get a LoST answ=
er&#8230;&nbsp; if LoST hasn't been done, then the proxy should do it.&nbsp=
; A good requirement, but how does a proxy ensure that this is done rightly=
?</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Idea is try=
 to have a marker in the SIP message - don't know how to do this.</FONT></S=
PAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Trying to a=
void having to force the proxy from doing the check.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">John: isn't=
 there something already in the geolocation field as a &quot;use for routin=
g&quot; ?</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Keith: what=
 about the socks parameter (?)</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Brian: 2 go=
od comments, that we'll cosider.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Also, anoth=
er point of discussion, Henry claims that you can't do a SHOULD in an INFOR=
MATIONAL document (downref exception).</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Jon: Advise=
 would be to change the text, to be as if it would not be normative.&nbsp; =
If there are things that are normative here, replicated them (in Framework?=
)</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Keith: what=
's the new status?</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Brian: Fram=
ework will be INFORMATIONAL now.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Brian: Is t=
here a document status that is BCP?&nbsp; If xml2rfc has that, then I'll ch=
ange it to that</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">--</FONT></=
SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Notewell do=
es apply - needs to be added to slide deck</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">--</FONT></=
SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Discussed L=
ost-sync</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Brian: does=
n't think this will see wide use.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Brian: Othe=
r database sync mechanisms exist,</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Brian: NENA=
 is looking at OGC's database layer mechanism to replicate</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Hannes: may=
be you could pass the OGC doc link to the list.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">-- </FONT><=
/SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">RPH - James=
 Polk</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Diagram - 0=
1 shows insertion of &quot;esnet&quot; as RPH marker</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Janet: shor=
t read - 7 pages w/boilerplate</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Marc: any c=
omments for James?</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Brian: I wa=
nt to make this a wg approved document.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">James: Alre=
ady is a wg document.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Hannes: We =
had some re-scope activity&#8230; based on our earlier hope to submit frame=
work document to the IESG...</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Keith: Is t=
his a wg doc or not?</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Jon: techni=
cally, a wg chair is empowered to accept anything they think s/b accepted, =
but there should also be an wg charter item to cover it.&nbsp; So, between =
two views.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Keith:</FON=
T></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Jon: If the=
re is a wg sense to work on it - I'm not going to say don't do it.</FONT></=
SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Jon: kinda =
like the same tone of &quot;resignation&quot;?</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Hannes: nee=
d to read through the document, but basically, the diagram looks better tha=
n what was there before.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">James: desc=
ribes any VSP that is a &quot;trusted&quot; entity with the ESInet.</FONT><=
/SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">--</FONT></=
SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Rough locat=
ion - Richard Barnes</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Discussed g=
eo requirements</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Geo - point=
s out that the greater shape provided encompasses all of the more precise l=
ocation possibilities.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Civic locat=
ion - harder to do, since filter areas may be harder to delineate.</FONT></=
SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Roger: I th=
ink it's probably impossible to have a general solution that works with civ=
ic location.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Brian: civi=
c does work - you can provide a &quot;precise&quot; other civic address, fo=
r example, for routing, and follow up with a more precise location.</FONT><=
/SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Hannes: hop=
efully, Richard can apply some of the comments made here, before expiration=
 date.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Richard: ma=
ybe.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">--</FONT></=
SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Sos-paramet=
er - Milan Patel</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Presentatio=
n given</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Questions?&=
nbsp; No response.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Hannes: Jon=
 &amp; Keith, SIP expert opinion?</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Keith: Have=
n't worked through all of part 4 yet</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Milan: Woul=
dn't recognize the contact address as an emergency use case - contact</FONT=
></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Jon: </FONT=
></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Hannes:&nbs=
p; Would be good to document what would happen if not there - error cases</=
FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Milan: yeah=
, good to do.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">--</FONT></=
SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Brian: </FO=
NT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Marc: we ca=
n come back to this one.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">--</FONT></=
SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Andrea?</FO=
NT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">--</FONT></=
SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">LoST Servic=
e Boundaries - Karlheinz: </FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Comments:</=
FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Hannes: Thi=
nks its good, but see it maybe as an experimental</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Richard: I =
think it&#8217;s a good, useful draft.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Roger: It's=
 good - another example of this could be campus security (hole) within a gr=
eater metro region.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Brian: I do=
n't really care - don't see any danger.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Cullen: Int=
roduces hole, but probably already well down that road.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Brian: yeah=
.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Hannes: we =
should discuss this more on the list (?)</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">-- </FONT><=
/SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Premature D=
isconnet - Brian </FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Have asked =
for this to be considered, and have been told&#8230;</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Seems like =
they (those in the IETF?) only want to solve it through UI only. </FONT></S=
PAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Don't know =
what to do to move this forward.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Has been a =
discussion of solution paths</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Keith: Did =
you get my comments?</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Brian: Will=
 have to go back and look - I know some were addressable, some don't know h=
ow to handle.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Guy: (misse=
d)</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Brian: Can'=
t do this through UI</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Cullen: Do =
you think you could get consensus on that point, that you can't do it throu=
gh UI?</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Brian: Depe=
nds on how you frame the requirement.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Hannes: may=
be I should try to set up a conference call, to include several of you who =
have comments or interest.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Keith: I've=
 made some detailed comments - need to have the requirements in front of me=
.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Hannes: for=
getting the requirements for the moment, could we proceed then?</FONT></SPA=
N></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Keith: The =
solution that mimicks the PSTN is not acceptable to me.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Guy: That i=
s not what we're asking for.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Hannes &amp=
; Marc to put together a meeting to discuss.&nbsp; Should include: Henning,=
 Ted, Keith, Randy, Guy, Brian.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Guy: Just s=
o I understand, this is not yet a working group item? </FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Hannes/Marc=
: yes, not a wg item.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Guy: In ord=
er to get there, we need to have rough consensus?</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">--</FONT></=
SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">12:48 Pacif=
ic</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Forte Lost =
Extensions - Andrea</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Define the =
service URNs</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Hannes: Ver=
y much in favor of this - since in many cases, IANA mechanisms require too =
much effort to get extensions&#8230;&nbsp; we shouldn't have originally don=
e this... expert review is all that's needed.&nbsp; So I would be very much=
 in favor.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Andrea: oka=
y.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Hannes: Kei=
th, you had comments on the list on this?&nbsp; Some proposed wording you d=
idn't like?</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Keith: the =
question&#8230;?</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Hannes: Are=
 you in favor of changing IANA registration to expert review instead.</FONT=
></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Keith: May =
have thoughts regarding the hierachical structure&#8230; need to see actual=
 words, are they in the draft?</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Keith: need=
 to say what the rules are when we've got some kind of hierarchy, can't jus=
t be independent.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Hannes: yea=
h&#8230; will have to think about that&#8230;</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Andrea:</FO=
NT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Hannes: wil=
l you be updating the document?</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Andrea: yes=
, will update the document, wanted here to see what the working group was t=
hinking about this.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Hannes: cou=
ld you or Henning trigger the discussion on this service urn update? What i=
s the plan?</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">? Discussio=
n around the deadline</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">--</FONT></=
SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Unauthentic=
ated Access - ?</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Hannes: Hen=
ning couldn't participate, which is probably good since we're running out o=
f time.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">--</FONT></=
SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Hannes: Was=
 this meeting helpful?</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">(2 or 3 yes=
 responses)</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">James: prob=
ably a good idea to have this kind of meeting 3 or 4 weeks ahead of a f2f (=
for Roger) and the rest of us.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Marc: shoul=
d probably have meetings for...</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">Brian: woul=
d agree, but not agree to having a single 2hr meeting for one document only=
.</FONT></SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">--</FONT></=
SPAN></P>

<P DIR=3DLTR><SPAN LANG=3D"en-us"><FONT SIZE=3D2 FACE=3D"Arial">/end.</FONT=
></SPAN></P>
<BR>
<BR>
<BR>

<P DIR=3DLTR><SPAN LANG=3D"en-us"></SPAN><SPAN LANG=3D"en-us"></SPAN><SPAN =
LANG=3D"en-us"></SPAN></P>


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------_=_NextPart_001_01C9EED9.1B33F2F2--

From Martin.Thomson@andrew.com  Mon Jun 22 18:01:36 2009
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From: "Thomson, Martin" <Martin.Thomson@andrew.com>
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