
From christer.holmberg@ericsson.com  Fri Jun  1 03:22:11 2012
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From: Christer Holmberg <christer.holmberg@ericsson.com>
To: Paul Kyzivat <pkyzivat@alum.mit.edu>, "sipcore@ietf.org" <sipcore@ietf.org>
Date: Fri, 1 Jun 2012 12:22:08 +0200
Thread-Topic: [sipcore] WGLC for draft-ietf-sipcore-proxy-feature-02 - Shida's comments
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Subject: Re: [sipcore] WGLC for draft-ietf-sipcore-proxy-feature-02 - Shida's comments
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Hi,

>>>> What does the following sentence to above mean? Are you saying that=20
>>>> you could in fact define a way to convey the address of the entity whi=
ch indicated support of feature/capabilities by defining a method to do so =
in the sip feature-cap spec?
>>>
>>> It means that the Feature-Caps header field itself does not contain a h=
eader field parameter for conveying the address, but that an individual fea=
ture cap can have an address value if needed.
>>>
>>> Example:
>>>
>>> myFeatureCaps=3D"address=3Dx.y.z.w"
>>
>>The paragraph is still a bit confusing. How about:
>>
>>    NOTE: It is not possible to convey the address of the SIP entity as a
>>    Feature-Caps header field parameter.  Each feature that requires
>>    address information to be conveyed need to define a way to convey
>>    that information as part of the associated SIP feature cap value.
>>
>>    NOTE: If data is needed about a feature, such as the address of the
>>    sip entity, then the feature definition must define a way to convey
>>    that information as part of the associated SIP feature cap value.
>
> Looks good.

When starting to implement this change, I realized that the notes could be =
combined into a single note. I also added some clarification words:

	"NOTE: It is not possible to, as a Feature-Caps header field value, convey=
=20
	the address of the SIP entity that inserted the Feature-Caps header field.=
=20
 	If additional data about a supported feature needs to be conveyed, such=20
	as the address of the SIP entity that indicated support of the feature, th=
en=20
	the feature definition needs to define a way to convey that information as=
=20
	a value of the associated feature cap."

Regards,

Christer


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From: Christer Holmberg <christer.holmberg@ericsson.com>
To: Paul Kyzivat <pkyzivat@alum.mit.edu>, "sipcore@ietf.org" <sipcore@ietf.org>, "Shida Schubert (shida@agnada.com)" <shida@agnada.com>
Date: Fri, 1 Jun 2012 12:51:09 +0200
Thread-Topic: [sipcore] WGLC for draft-ietf-sipcore-proxy-feature-02 - Shida's comments
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Subject: Re: [sipcore] WGLC for draft-ietf-sipcore-proxy-feature-02 - Shida's comments
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Hi,

>> 	o  - The SIP entity acts as a SIP proxy.
>> 	o  - The SIP entity acts as a SIP registrar.
>> 	o  - The SIP entity acts as a B2BUA, where the Contact header field
>> 	URI represents another SIP entity.
>>
>> 	This specification also defines a new SIP header field, Feature-Caps,
>> 	to convey feature caps in SIP messages."
>
> Yes.

I am not sure if the suggestion was to remove the last paragraph of the ori=
ginal text, but I suggest to keep it as a note:
			=09
	"NOTE: Unlike media feature tags, feature caps are intended to only be=20
	used with the SIP protocol."
	=09
Regards,

Christer


From pkyzivat@alum.mit.edu  Sat Jun  2 13:13:27 2012
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Subject: Re: [sipcore] WGLC for draft-ietf-sipcore-proxy-feature-02
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Just a reminder - this WGLC is open until Friday.
Shida provided a very thorough review. (Thank you Shida!)
It would be good if someone else could also look it over carefully.

	Thanks,
	Paul

On 5/18/12 11:10 AM, Paul Kyzivat wrote:
> I am issuing a WGLC for:
>
> draft-ietf-sipcore-proxy-feature-02
> (http://tools.ietf.org/html/draft-ietf-sipcore-proxy-feature-02)
>
> The WGLC will conclude at 23:59 UTC on June 8, 2012.
>
> (I'm giving it three weeks because there are a lot of things going on at
> this time - a 3gpp meeting, some holidays, etc.)
>
> Note that this is intended to satisfy our milestone: Mechanism to
> indicate proxy capabilities to both endpoints and other intermediaries
> in the path of a REGISTER transaction or dialog-forming transaction to
> IESG (PS)
>
> I'm looking for volunteers to perform a careful review of this document.
> It would be especially good to have participation of people who haven't
> previously been closely involved. Please inform me and Adam if you are
> able to do a careful WGLC review.
>
> Thanks,
> Paul (as co-chair)
> _______________________________________________
> sipcore mailing list
> sipcore@ietf.org
> https://www.ietf.org/mailman/listinfo/sipcore
>


From ravikumar@huawei.com  Sun Jun  3 23:29:31 2012
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From: Ravi Kumar <ravikumar@huawei.com>
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Subject: [sipcore] Regarding RFC 5404
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Hi All,

 

RFC 5404 section 
7.1.  Media Type Definition

 

int-delay:  

 

         int-delay = "int-delay:" source-delay *("," source-delay)
 
         source-delay = SSRC ":" delay-value
 
         SSRC = 1*8HEXDIG ; The 32-bit SSRC encoded in hex format
 
         delay-value = 1*5DIGIT ; The delay value in milliseconds
 
         Example: int-delay=ABCD1234:1000,4321DCB:640
 
         NOTE: No white space allowed in the parameter before the end of
         all the value pairs
 

 

7.2.  Mapping to SDP

 

   o  Any remaining parameters go in the SDP "a=fmtp" attribute by
      copying them directly from the media type parameter string as a
      semicolon-separated list of parameter=value pairs.
 

 

As per section int-delay parameter should be part of a=fmtp line and it
should have parameter as parameter=value pair.

But as per ABNF it should be int-delay:<value>

Also example mentions that int-delay=<value>

 

This looks like bug in RFC. Please confirm what should be correct ABNF.

 


Regards,

Ravi Kumar

 

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From ivo.sedlacek@ericsson.com  Mon Jun  4 05:11:41 2012
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From: Ivo Sedlacek <ivo.sedlacek@ericsson.com>
To: Paul Kyzivat <pkyzivat@alum.mit.edu>, "sipcore@ietf.org" <sipcore@ietf.org>
Date: Mon, 4 Jun 2012 14:11:37 +0200
Thread-Topic: [sipcore] WGLC for draft-ietf-sipcore-proxy-feature-02
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Subject: Re: [sipcore] WGLC for draft-ietf-sipcore-proxy-feature-02
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Hello,

ISSUE: two possible ABNF rules (fcap-value-list, fcap-string-value) are def=
ined for feature cap value. If sending entity uses fcap-value-list and rece=
iving entity expects fcap-string-value (or vice verse), interoperability pr=
oblem would occur.

PROPOSAL: the SIP feature cap specification states whether the feature caps=
 value follows fcap-value-list ABNF rule or fcap-string-value ABNF rule. E.=
g.
-------------------------
4.4.3.  Feature Cap Values

   A SIP feature cap can have an associated value, or a list of values.
   A SIP feature cap value MUST conform to the ABNF defined in Section
   6.2.2.

<new>The SIP feature cap specification MUST define whether value of the fea=
ture cap follows the fcap-value-list ABNF rule or the fcap-string-value ABN=
F rule.</new>

   The SIP feature cap specification MUST define the syntax and
   semantics of any value defined for the SIP feature cap, including
   possible restrictions related to the usage of a specific value.

   A SIP feature cap value is only applicable for the SIP feature cap
   for which it has been defined.  For other SIP feature caps, the value
   has to be defined explicitly, even if the name or the semantics are
   identical.

   It is STRONLY RECOMMENDED to not re-use a value name that already has
   been defined for another SIP feature cap, unless the semantics of the
   values are the same.
-------------------------

Kind regards

Ivo Sedlacek

Ericsson
GF Technology, Terminal Standardization
Sweden
Office: +46 10 711 9382
ivo.sedlacek@ericsson.com
www.ericsson.com

This communication is confidential. We only send and receive email on the b=
asis of the term set out at www.ericsson.com/email_disclaimer


-----Original Message-----
From: sipcore-bounces@ietf.org [mailto:sipcore-bounces@ietf.org] On Behalf =
Of Paul Kyzivat
Sent: 2. =E8ervna 2012 22:13
To: sipcore@ietf.org
Subject: Re: [sipcore] WGLC for draft-ietf-sipcore-proxy-feature-02

Just a reminder - this WGLC is open until Friday.
Shida provided a very thorough review. (Thank you Shida!) It would be good =
if someone else could also look it over carefully.

        Thanks,
        Paul

On 5/18/12 11:10 AM, Paul Kyzivat wrote:
> I am issuing a WGLC for:
>
> draft-ietf-sipcore-proxy-feature-02
> (http://tools.ietf.org/html/draft-ietf-sipcore-proxy-feature-02)
>
> The WGLC will conclude at 23:59 UTC on June 8, 2012.
>
> (I'm giving it three weeks because there are a lot of things going on
> at this time - a 3gpp meeting, some holidays, etc.)
>
> Note that this is intended to satisfy our milestone: Mechanism to
> indicate proxy capabilities to both endpoints and other intermediaries
> in the path of a REGISTER transaction or dialog-forming transaction to
> IESG (PS)
>
> I'm looking for volunteers to perform a careful review of this document.
> It would be especially good to have participation of people who
> haven't previously been closely involved. Please inform me and Adam if
> you are able to do a careful WGLC review.
>
> Thanks,
> Paul (as co-chair)
> _______________________________________________
> sipcore mailing list
> sipcore@ietf.org
> https://www.ietf.org/mailman/listinfo/sipcore
>

_______________________________________________
sipcore mailing list
sipcore@ietf.org
https://www.ietf.org/mailman/listinfo/sipcore

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<META http-equiv=3DContent-Type content=3D"text/html; charset=3Diso-8859-2"=
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<BODY><!-- Converted from text/plain format -->
<DIV><FONT face=3DArial size=3D2>Hello,<BR><BR>ISSUE: two possible ABNF rul=
es=20
(fcap-value-list, fcap-string-value) are defined for feature cap value. If=
=20
sending entity uses fcap-value-list and receiving entity expects=20
fcap-string-value (or vice verse), interoperability problem would=20
occur.<BR><BR>PROPOSAL: the SIP feature cap specification states whether th=
e=20
feature caps value follows fcap-value-list ABNF rule or fcap-string-value A=
BNF=20
rule. E.g.<BR></FONT><FONT face=3DArial=20
size=3D2>-------------------------</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>4.4.3.&nbsp; Feature Cap Values<BR><BR>&nb=
sp;&nbsp;=20
A SIP feature cap can have an associated value, or a list of=20
values.<BR>&nbsp;&nbsp; A SIP feature cap value MUST conform to the ABNF de=
fined=20
in Section<BR>&nbsp;&nbsp; 6.2.2.<BR><BR><FONT color=3D#0000ff>&lt;new&gt;T=
he SIP=20
feature cap specification MUST define whether value of the feature cap foll=
ows=20
the fcap-value-list ABNF rule or the fcap-string-value ABNF=20
rule.&lt;/new&gt;<BR></FONT><BR>&nbsp;&nbsp; The SIP feature cap specificat=
ion=20
MUST define the syntax and<BR>&nbsp;&nbsp; semantics of any value defined f=
or=20
the SIP feature cap, including<BR>&nbsp;&nbsp; possible restrictions relate=
d to=20
the usage of a specific value.<BR><BR>&nbsp;&nbsp; A SIP feature cap value =
is=20
only applicable for the SIP feature cap<BR>&nbsp;&nbsp; for which it has be=
en=20
defined.&nbsp; For other SIP feature caps, the value<BR>&nbsp;&nbsp; has to=
 be=20
defined explicitly, even if the name or the semantics are<BR>&nbsp;&nbsp;=20
identical.<BR><BR>&nbsp;&nbsp; It is STRONLY RECOMMENDED to not re-use a va=
lue=20
name that already has<BR>&nbsp;&nbsp; been defined for another SIP feature =
cap,=20
unless the semantics of the<BR>&nbsp;&nbsp; values are the=20
same.<BR>-------------------------</FONT></DIV>
<DIV><FONT face=3DArial size=3D2><BR>Kind regards<BR><BR>Ivo=20
Sedlacek<BR><BR>Ericsson<BR>GF Technology, Terminal=20
Standardization<BR>Sweden<BR>Office: +46 10 711=20
9382<BR>ivo.sedlacek@ericsson.com<BR>www.ericsson.com<BR><BR>This communica=
tion=20
is confidential. We only send and receive email on the basis of the term se=
t out=20
at www.ericsson.com/email_disclaimer<BR><BR><BR>-----Original=20
Message-----<BR>From: sipcore-bounces@ietf.org [</FONT><A=20
href=3D"mailto:sipcore-bounces@ietf.org"><FONT face=3DArial=20
size=3D2>mailto:sipcore-bounces@ietf.org</FONT></A><FONT face=3DArial size=
=3D2>] On=20
Behalf Of Paul Kyzivat<BR>Sent: 2. =E8ervna 2012 22:13<BR>To:=20
sipcore@ietf.org<BR>Subject: Re: [sipcore] WGLC for=20
draft-ietf-sipcore-proxy-feature-02<BR><BR>Just a reminder - this WGLC is o=
pen=20
until Friday.<BR>Shida provided a very thorough review. (Thank you Shida!) =
It=20
would be good if someone else could also look it over=20
carefully.<BR><BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=20
Thanks,<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Paul<BR><BR>On 5/18/1=
2=20
11:10 AM, Paul Kyzivat wrote:<BR>&gt; I am issuing a WGLC for:<BR>&gt;<BR>&=
gt;=20
draft-ietf-sipcore-proxy-feature-02<BR>&gt; (</FONT><A=20
href=3D"http://tools.ietf.org/html/draft-ietf-sipcore-proxy-feature-02"><FO=
NT=20
face=3DArial=20
size=3D2>http://tools.ietf.org/html/draft-ietf-sipcore-proxy-feature-02</FO=
NT></A><FONT=20
face=3DArial size=3D2>)<BR>&gt;<BR>&gt; The WGLC will conclude at 23:59 UTC=
 on June=20
8, 2012.<BR>&gt;<BR>&gt; (I'm giving it three weeks because there are a lot=
 of=20
things going on<BR>&gt; at this time - a 3gpp meeting, some holidays,=20
etc.)<BR>&gt;<BR>&gt; Note that this is intended to satisfy our milestone:=
=20
Mechanism to<BR>&gt; indicate proxy capabilities to both endpoints and othe=
r=20
intermediaries<BR>&gt; in the path of a REGISTER transaction or dialog-form=
ing=20
transaction to<BR>&gt; IESG (PS)<BR>&gt;<BR>&gt; I'm looking for volunteers=
 to=20
perform a careful review of this document.<BR>&gt; It would be especially g=
ood=20
to have participation of people who<BR>&gt; haven't previously been closely=
=20
involved. Please inform me and Adam if<BR>&gt; you are able to do a careful=
 WGLC=20
review.<BR>&gt;<BR>&gt; Thanks,<BR>&gt; Paul (as co-chair)<BR>&gt;=20
_______________________________________________<BR>&gt; sipcore mailing=20
list<BR>&gt; sipcore@ietf.org<BR>&gt; </FONT><A=20
href=3D"https://www.ietf.org/mailman/listinfo/sipcore"><FONT face=3DArial=20
size=3D2>https://www.ietf.org/mailman/listinfo/sipcore</FONT></A><BR><FONT=
=20
face=3DArial=20
size=3D2>&gt;<BR><BR>_______________________________________________<BR>sip=
core=20
mailing list<BR>sipcore@ietf.org<BR></FONT><A=20
href=3D"https://www.ietf.org/mailman/listinfo/sipcore"><FONT face=3DArial=20
size=3D2>https://www.ietf.org/mailman/listinfo/sipcore</FONT></A><BR></DIV>=
</BODY></HTML>

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From: "Worley, Dale R (Dale)" <dworley@avaya.com>
To: Ravi Kumar <ravikumar@huawei.com>, "sipcore@ietf.org" <sipcore@ietf.org>
Date: Mon, 4 Jun 2012 12:33:42 -0400
Thread-Topic: [sipcore] Regarding RFC 5404
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Subject: Re: [sipcore] Regarding RFC 5404
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> From: Ravi Kumar [ravikumar@huawei.com]
>=20
> RFC 5404 section 7.1.  Media Type Definition
>=20
> int-delay:
>=20
>          int-delay =3D "int-delay:" source-delay *("," source-delay)
>          source-delay =3D SSRC ":" delay-value
>          SSRC =3D 1*8HEXDIG ; The 32-bit SSRC encoded in hex format
>          delay-value =3D 1*5DIGIT ; The delay value in milliseconds
>=20
>          Example: int-delay=3DABCD1234:1000,4321DCB:640
>=20
> This looks like bug in RFC. Please confirm what should be correct ABNF.

Yes, it looks like a bug in the RFC; everywhere except that one line
of ABNF shows "int-delay=3D".  Please file an erratum on this
(http://www.rfc-editor.org/errata.php)

I'm unsure anyone has implemented this -- Google doesn't turn up any
examples.  (There are a lot of examples of "int-delay", but they are
all for the AMR-WB codec, where it has a different syntax.)

Dale

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Subject: [sipcore] SIP Trunking Interoperability, Security and SIP-IPv6 Deployment Challenges Headline Agenda at SIPNOC US 2012
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=20

=09

 <http://www.sipnoc.org/> Introducing SIPNOC - The SIP Network Operators =
Conference


http://images.tmcnet.com/mkt/blast/microsoft/spacer.gif


http://images.tmcnet.com/mkt/blast/microsoft/spacer.gif


http://images.tmcnet.com/mkt/blast/microsoft/spacer.gif

SIP Trunking Interoperability, Security and SIP-IPv6 Deployment =
Challenges Headline Agenda at SIPNOC US 2012

=20

The Hyatt Dulles Hotel, Herndon, Virginia =E2=80=A2 June 25-27, 2012

=20


 <http://www.sipforum.org/> =
http://images.tmcnet.com/mkt/blast/sipnoc/sipforum.png


 <http://www.acmepacket.com/> =
http://images.tmcnet.com/mkt/blast/sipnoc/acme.jpg

SIP trunking interoperability, security, and SIP- IPv6 deployment =
challenges are several of the agenda topics at SIPNOC US 2012 =
<http://www.sipforum.org/content/view/369/270/> , the two-day conference =
presented by the SIP Forum <http://www.sipforum.org/>  for service =
provider engineering and technical staff that is taking place June 25-27 =
at the Hyatt Dulles Hotel in Herndon, VA. Now in its second year, SIPNOC =
US 2012 is a unique educational conference for international telecom =
stakeholders responsible for the deployment, management and ongoing =
operation of SIP-based services in service provider networks.=20

The preliminary SIPNOC US 2012 conference schedule =
<http://www.sipforum.org/content/view/378/278/>  features presentations, =
speeches and panels by representatives of leading international wireline =
and broadband service providers, government officials and academic =
researchers. Speakers will explore critical "real-world" service =
provider challenges related to SIP applications and infrastructure, =
including: network security, SIP trunking, testing and application =
development, Fax over IP, call routing and peering, IPv6, =
troubleshooting and monitoring, emergency services and more.

"This year's conference line-up is designed to build on the conversation =
started at last year's inaugural SIPNOC by some of our industry's =
brightest technical minds," said Marc Robins, SIP Forum President and =
Managing Director. "We believe the presentations will be insightful and =
educational for conferees; we also hope they will spur interesting =
discussions and the free exchange of ideas, ultimately leading to =
tangible progress that positively impacts global service provider SIP =
deployments."=20

Federal Communications Commission (FCC) Chief Technology Officer (CTO) =
Henning Schulzrinne will present the SIPNOC US 2012 keynote address. A =
principal architect of the SIP standard, Schulzrinne has published more =
than 250 journal and conference papers and more than 70 Internet =
Requests for Comment (RFCs), helping to shape and formulate key =
protocols for enabling voice-over-IP (VoIP), such as SIP, into Internet =
Standards.=20

Registration for SIPNOC US 2012 remains open at =
http://www.regonline.com/sipnocus2012.

SIPNOC US 2012 attendees will include telecommunications providers, =
major backbone operators, interconnect and wholesale solution providers, =
ISPs, cable operators, wireless network operators and representatives of =
large enterprises deploying major SIP initiatives. While the =
international carrier and service provider community is the primary =
audience for SIPNOC US 2012, industry stakeholders involved in major SIP =
initiatives, such as network equipment vendors, government agency =
representatives, large enterprise network operators and academic =
researchers are also encouraged to attend.

SIPNOC US 2012 Registration Information
The regular individual registration fee for SIPNOC US 2012 attendance is =
$895 for two days of conference activities. This fee will cover =
admittance to all conference sessions, presentations, keynotes, meals =
and breaks, as well as a welcome reception on the evening before the =
event begins and a special evening dinner and networking reception on =
the first day of the event.=20

Take Advantage of Special Savings Now!=20

If you missed the special early bird offer, don't despair! If you act =
now, you can take advantage of a special discounted rate of $745, a =
savings of $150 off the regular rate. Please note that seating is =
extremely limited, so act fast to ensure your place at the event!=20

To register for SIPNOC US 2012, please visit =
http://www.regonline.com/sipnocus2012 and use the discount code =
"sipnocus12150" to obtain this special discount.=20

SIP Forum Full Members Save Even More! For individuals of companies that =
are active Full Members of the SIP Forum, a discount of $300 off the =
regular conference rate will be provided, and exclusive Full Member-only =
discounts will be offered for a variety of special SIPNOC US 2012 =
sponsorship packages. Please contact Marc Robins at =
sipnocinfo@sipforum.org or call +1-203-829-6307 to take advantage of =
these special offers.=20

SIPNOC US 2012 Hotel Reservations
The SIP Forum has negotiated a nicely discounted room rate of $169/night =
at the four-star Hyatt Dulles Hotel. This rate includes in-room WiFi =
Internet access! Other valuable benefits include a free shuttle bus to =
and from Dulles Airport and free parking in the hotel parking lot.

The cut-off date to receive this great rate is June 11, 2012. =
Reservation requests made after the cut-off date will be based on =
availability at the hotel's prevailing rates. So take advantage of this =
great offer now and register for your stay at the Hyatt Dulles by =
visiting https://resweb.passkey.com/go/SIPNOCUS2012.

SIPNOC US 2012 Sponsorship Opportunities
If you are interested in a corporate sponsorship of the event, please =
contact Marc Robins, SIP Forum President and Managing Director, for =
detailed information about available sponsorship opportunities.=20
Marc can be reached at +1-203-829-6307 or sipnocinfo@sipforum.org.=20

http://images.tmcnet.com/mkt/blast/microsoft/spacer.gif


http://images.tmcnet.com/mkt/blast/microsoft/spacer.gif


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http://images.tmcnet.com/mkt/blast/microsoft/spacer.gif


For more information, please visit:
 <http://www.sipnoc.org> www.sipnoc.org or email  =
<mailto:sipnocinfo@sipforum.org> sipnocinfo@sipforum.org


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		=09
=09

=20


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lang=3DEN-US link=3Dblue vlink=3Dpurple><div class=3DWordSection1><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><div align=3Dcenter><table =
class=3DMsoNormalTable border=3D0 cellspacing=3D0 cellpadding=3D0 =
width=3D813 style=3D'width:487.5pt;background:white'><tr><td colspan=3D3 =
style=3D'background:#CFCFCF;padding:0in 0in 0in 0in'></td></tr><tr><td =
colspan=3D3 style=3D'padding:0in 0in 0in 0in'><p class=3DMsoNormal><a =
href=3D"http://www.sipnoc.org/" title=3D"&quot;Introducing SIPNOC - The =
SIP Network Operators Conference&quot; "><span =
style=3D'text-decoration:none'><img border=3D0 width=3D728 height=3D130 =
id=3D"_x0000_i1025" src=3D"cid:image001.jpg@01CD4259.618B15C0" =
alt=3D"Introducing SIPNOC - The SIP Network Operators =
Conference"></span></a><o:p></o:p></p></td></tr><tr><td colspan=3D3 =
style=3D'background:#CFCFCF;padding:0in 0in 0in 0in'><p =
class=3DMsoNormal><img border=3D0 width=3D2 height=3D2 =
id=3D"_x0000_i1026" src=3D"cid:image002.png@01CD4259.618B15C0" =
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p></p></td></tr><tr><td colspan=3D3 style=3D'padding:0in 0in 0in 0in'><p =
class=3DMsoNormal><img border=3D0 width=3D10 height=3D10 =
id=3D"_x0000_i1027" src=3D"cid:image003.png@01CD4259.618B15C0" =
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p></p></td></tr><tr><td width=3D34 style=3D'width:20.25pt;padding:0in =
0in 0in 0in'><p class=3DMsoNormal><img border=3D0 width=3D10 height=3D10 =
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p></p></td><td width=3D875 style=3D'width:525.0pt;padding:0in 0in 0in =
0in'><p class=3DMsoNormal><b><span =
style=3D'font-size:16.5pt;font-family:"Calibri","sans-serif";color:#18477=
F'>SIP Trunking Interoperability, Security and SIP-IPv6 Deployment =
Challenges Headline Agenda at SIPNOC US 2012<o:p></o:p></span></b></p><p =
class=3DMsoNormal><b><span =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif";color:teal'>=
&nbsp;<o:p></o:p></span></b></p><p class=3DMsoNormal><b><span =
style=3D'font-family:"Calibri","sans-serif";color:#666666'>The Hyatt =
Dulles Hotel, Herndon, Virginia =E2=80=A2 June 25-27, =
2012<o:p></o:p></span></b></p><p class=3DMsoNormal><b><span =
style=3D'font-family:"Calibri","sans-serif";color:#666666'><o:p>&nbsp;</o=
:p></span></b></p><table class=3DMsoNormalTable border=3D0 =
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le><p><span =
style=3D'font-family:"Calibri","sans-serif";color:#333333'>SIP trunking =
interoperability, security, and SIP- IPv6 deployment challenges are =
several of the agenda topics at <a =
href=3D"http://www.sipforum.org/content/view/369/270/" =
target=3D"_blank">SIPNOC US 2012</a>, the two-day conference presented =
by the <a href=3D"http://www.sipforum.org/" target=3D"_blank">SIP =
Forum</a> for service provider engineering and technical staff that is =
taking place June 25-27 at the Hyatt Dulles Hotel in Herndon, VA. Now in =
its second year,<strong><span =
style=3D'font-family:"Calibri","sans-serif"'> SIPNOC US =
2012</span></strong> is a unique educational conference for =
international telecom stakeholders responsible for the deployment, =
management and ongoing operation of SIP-based services in service =
provider networks. <br><br>The preliminary <a =
href=3D"http://www.sipforum.org/content/view/378/278/" =
target=3D"_blank">SIPNOC US 2012 conference schedule</a> features =
presentations, speeches and panels by representatives of leading =
international wireline and broadband service providers, government =
officials and academic researchers. Speakers will explore critical =
&quot;real-world&quot; service provider challenges related to SIP =
applications and infrastructure, including: network security, SIP =
trunking, testing and application development, Fax over IP, call routing =
and peering, IPv6, troubleshooting and monitoring, emergency services =
and more.<br><br>&quot;This year's conference line-up is designed to =
build on the conversation started at last year's inaugural SIPNOC by =
some of our industry's brightest technical minds,&quot; said Marc =
Robins, SIP Forum President and Managing Director. &quot;We believe the =
presentations will be insightful and educational for conferees; we also =
hope they will spur interesting discussions and the free exchange of =
ideas, ultimately leading to tangible progress that positively impacts =
global service provider SIP deployments.&quot; <br><br>Federal =
Communications Commission (FCC) Chief Technology Officer (CTO) Henning =
Schulzrinne will present the <strong><span =
style=3D'font-family:"Calibri","sans-serif"'>SIPNOC US =
2012</span></strong> keynote address. A principal architect of the SIP =
standard, Schulzrinne has published more than 250 journal and conference =
papers and more than 70 Internet Requests for Comment (RFCs), helping to =
shape and formulate key protocols for enabling voice-over-IP (VoIP), =
such as SIP, into Internet Standards. <br><br>Registration for SIPNOC US =
2012 remains open at <a href=3D"http://www.regonline.com/sipnocus2012" =
target=3D"_blank">http://www.regonline.com/sipnocus2012</a>.<br><br>SIPNO=
C US 2012 attendees will include telecommunications providers, major =
backbone operators, interconnect and wholesale solution providers, ISPs, =
cable operators, wireless network operators and representatives of large =
enterprises deploying major SIP initiatives. While the international =
carrier and service provider community is the primary audience for =
SIPNOC US 2012, industry stakeholders involved in major SIP initiatives, =
such as network equipment vendors, government agency representatives, =
large enterprise network operators and academic researchers are also =
encouraged to attend.<o:p></o:p></span></p><p><b><span =
style=3D'font-size:13.5pt;font-family:"Calibri","sans-serif";color:#00660=
0'>SIPNOC US 2012 Registration Information</span></b><span =
style=3D'font-family:"Calibri","sans-serif";color:#333333'><br>The =
regular individual registration fee for <strong><span =
style=3D'font-family:"Calibri","sans-serif"'>SIPNOC US =
2012</span></strong> attendance is $895 for two days of conference =
activities. This fee will cover admittance to all conference sessions, =
presentations, keynotes, meals and breaks, as well as a welcome =
reception on the evening before the event begins and a special evening =
dinner and networking reception on the first day of the event. =
<o:p></o:p></span></p><p><strong><span =
style=3D'font-size:15.0pt;font-family:"Calibri","sans-serif";color:red'>T=
ake Advantage of Special Savings Now! </span></strong><span =
style=3D'font-size:15.0pt;font-family:"Calibri","sans-serif";color:red'><=
o:p></o:p></span></p><p><strong><span =
style=3D'font-family:"Calibri","sans-serif";color:blue'>If you missed =
the special early bird offer, don't despair! If you act now, you can =
take advantage of a special discounted rate of $745, a savings of $150 =
off the regular rate. Please note that seating is extremely limited, so =
act fast to ensure your place at the event! </span></strong><span =
style=3D'font-family:"Calibri","sans-serif";color:#333333'><o:p></o:p></s=
pan></p><p><span =
style=3D'font-family:"Calibri","sans-serif";color:#333333'>To register =
for <strong><span style=3D'font-family:"Calibri","sans-serif"'>SIPNOC US =
2012</span></strong>, please visit <a =
href=3D"http://www.regonline.com/sipnocus2012">http://www.regonline.com/s=
ipnocus2012</a> and use the discount code &quot;sipnocus12150&quot; to =
obtain this special discount. <o:p></o:p></span></p><p><span =
style=3D'font-family:"Calibri","sans-serif";color:#333333'>SIP Forum =
Full Members Save Even More! For individuals of companies that are =
active Full Members of the SIP Forum, a discount of $300 off the regular =
conference rate will be provided, and exclusive Full Member-only =
discounts will be offered for a variety of special <strong><span =
style=3D'font-family:"Calibri","sans-serif"'>SIPNOC US =
2012</span></strong> sponsorship packages. Please contact Marc Robins at =
<a href=3D"mailto:sipnocinfo@sipforum.org">sipnocinfo@sipforum.org</a> =
or call +1-203-829-6307 to take advantage of these special offers. =
<o:p></o:p></span></p><p><b><span =
style=3D'font-size:13.5pt;font-family:"Calibri","sans-serif";color:#00660=
0'>SIPNOC US 2012 Hotel Reservations</span></b><span =
style=3D'font-family:"Calibri","sans-serif";color:#333333'><br>The SIP =
Forum has negotiated a nicely discounted room rate of $169/night at the =
four-star Hyatt Dulles Hotel. This rate includes in-room WiFi Internet =
access! Other valuable benefits include a free shuttle bus to and from =
Dulles Airport and free parking in the hotel parking =
lot.<o:p></o:p></span></p><p><span =
style=3D'font-family:"Calibri","sans-serif";color:#333333'>The cut-off =
date to receive this great rate is June 11, 2012. Reservation requests =
made after the cut-off date will be based on availability at the hotel's =
prevailing rates. So take advantage of this great offer now and register =
for your stay at the Hyatt Dulles by visiting <a =
href=3D"https://resweb.passkey.com/go/SIPNOCUS2012">https://resweb.passke=
y.com/go/SIPNOCUS2012</a>.<o:p></o:p></span></p><p><b><span =
style=3D'font-size:13.5pt;font-family:"Calibri","sans-serif";color:#00660=
0'>SIPNOC US 2012 Sponsorship Opportunities</span></b><span =
style=3D'font-family:"Calibri","sans-serif";color:#333333'><br>If you =
are interested in a corporate sponsorship of the event, please contact =
Marc Robins, SIP Forum President and Managing Director, for detailed =
information about available sponsorship opportunities. <br>Marc can be =
reached at +1-203-829-6307 or <a =
href=3D"mailto:sipnocinfo@sipforum.org">sipnocinfo@sipforum.org</a>. =
<o:p></o:p></span></p></td><td width=3D28 =
style=3D'width:16.5pt;padding:0in 0in 0in 0in'><p class=3DMsoNormal><img =
border=3D0 width=3D10 height=3D10 id=3D"_x0000_i1029" =
src=3D"cid:image003.png@01CD4259.618B15C0" =
alt=3D"http://images.tmcnet.com/mkt/blast/microsoft/spacer.gif"><o:p></o:=
p></p></td></tr><tr><td colspan=3D3 style=3D'padding:0in 0in 0in 0in'><p =
class=3DMsoNormal><img border=3D0 width=3D10 height=3D10 =
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alt=3D"http://images.tmcnet.com/mkt/blast/microsoft/spacer.gif"><o:p></o:=
p></p></td></tr><tr><td colspan=3D3 =
style=3D'background:#CFCFCF;padding:0in 0in 0in 0in'><p =
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p></p></td></tr><tr><td colspan=3D3 style=3D'padding:0in 0in 0in 0in'><p =
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p></p></td></tr><tr><td colspan=3D3 style=3D'padding:0in 0in 0in 0in'><p =
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style=3D'font-size:18.0pt;font-family:"Calibri","sans-serif";color:#33333=
3'>For more information, please visit:<br><a =
href=3D"http://www.sipnoc.org"><span =
style=3D'color:#18477F'>www.sipnoc.org</span></a> or email <a =
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an></b></p></td></tr><tr><td colspan=3D3 style=3D'padding:0in 0in 0in =
0in'><p class=3DMsoNormal><img border=3D0 width=3D10 height=3D10 =
id=3D"_x0000_i1033" src=3D"cid:image003.png@01CD4259.618B15C0" =
alt=3D"http://images.tmcnet.com/mkt/blast/microsoft/spacer.gif"><o:p></o:=
p></p></td></tr><tr><td colspan=3D3 =
style=3D'background:#CFCFCF;padding:0in 0in 0in 0in'><p =
class=3DMsoNormal><img border=3D0 width=3D15 height=3D15 =
id=3D"_x0000_i1034" src=3D"cid:image006.png@01CD4259.618B15C0" =
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p></p></td></tr><tr><td width=3D34 =
style=3D'width:20.25pt;background:#CFCFCF;padding:0in 0in 0in =
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From: Lili Yang_lili <lili.yang@huawei.com>
To: Christer Holmberg <christer.holmberg@ericsson.com>, "sipcore@ietf.org" <sipcore@ietf.org>
Thread-Topic: [sipcore] WGLC for draft-ietf-sipcore-proxy-feature-02 
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Date: Thu, 7 Jun 2012 09:43:50 +0000
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<div class=3D"Section1">
<p class=3D"MsoNormal"><span lang=3D"EN-US">Hello,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Minor comments in 4.1:<o:p></o:=
p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">A SIP feature cap can be used b=
y SIP entities to indicate support of<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&nbsp;&nbsp; features and capab=
ilities, in cases where media feature tags cannot<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&nbsp;&nbsp; be used, <u>ie</u>=
 if the Contact header field contains a URI that does not<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&nbsp;&nbsp; represent the SIP =
entity that wants to indicate support of its<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&nbsp;&nbsp; features and capab=
ilities.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><u><span lang=3D"EN-US">ie</span></u><span lang=3D"E=
N-US"> should be i.e.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&nbsp; A value, or a list of va=
lues, can be associated with a SIP feature<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&nbsp;&nbsp; cap.<o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">I guess some more description f=
or the value might be needed.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Best regards,<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Lili <o:p></o:p></span></p>
<div class=3D"MsoNormal" align=3D"center" style=3D"text-align:center"><span=
 lang=3D"EN-US">
<hr size=3D"2" width=3D"100%" align=3D"center">
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<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:=BB=AA=CE=C4=CF=B8=BA=DA;
color:black">Lili Yang<br>
</span><span style=3D"font-size:10.0pt;font-family:=BB=AA=CE=C4=CF=B8=BA=DA=
;color:black">=BB=AA=CE=AA=BC=BC=CA=F5=D3=D0=CF=DE=B9=AB=CB=BE<span lang=3D=
"EN-US"> Huawei Technologies Co., Ltd.<br>
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nt-family:=BB=AA=CE=C4=CF=B8=BA=DA;color:black"><br>
<br>
Phone: &#43;86-755-28422556<br>
Mobile:&#43;86-13632632065<br>
Email: Lili.yang@huawei.com<br>
</span><span style=3D"font-size:10.0pt;font-family:=BB=AA=CE=C4=CF=B8=BA=DA=
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=CC=EF=BB=AA=CE=AA=BB=F9=B5=D8=D3=CA=B1=E0=A3=BA<span lang=3D"EN-US">518129=
<br>
Huawei Technologies Co., Ltd.<br>
Bantian, Longgang District,Shenzhen 518129, P.R.China<br>
http://www.huawei.com <o:p></o:p></span></span></p>
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From christer.holmberg@ericsson.com  Thu Jun  7 06:53:59 2012
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From: Christer Holmberg <christer.holmberg@ericsson.com>
To: 'Lili Yang_lili' <lili.yang@huawei.com>, "sipcore@ietf.org" <sipcore@ietf.org>
Date: Thu, 7 Jun 2012 15:53:54 +0200
Thread-Topic: [sipcore] WGLC for draft-ietf-sipcore-proxy-feature-02
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Subject: Re: [sipcore] WGLC for draft-ietf-sipcore-proxy-feature-02
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From adam@nostrum.com  Thu Jun  7 12:34:19 2012
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From: Adam Roach - SIPCORE Chair <adam@nostrum.com>
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Subject: [sipcore] First Call: Agenda requests for Vancouver
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[as chair]

This is a first call for agenda requests for the SIPCORE meeting in 
Vancouver. If you would like a time slot to discuss open issues in an 
existing document, please send email to me and Paul no later than July 
9th (approximately one month from today).

Thanks.

/a

From lili.yang@huawei.com  Fri Jun  8 01:26:47 2012
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From: Lili Yang_lili <lili.yang@huawei.com>
To: Christer Holmberg <christer.holmberg@ericsson.com>, "sipcore@ietf.org" <sipcore@ietf.org>
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--_004_A1D1C6D3ACF6264682914707AE2B72862E91CF51szxeml521mbxchi_--

From pkyzivat@alum.mit.edu  Sun Jun 10 11:07:29 2012
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Subject: Re: [sipcore] WGLC for draft-ietf-sipcore-proxy-feature-02
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Ivo,

I don't think Christer responded to you. I'll take a whack at it:

On 6/4/12 2:11 PM, Ivo Sedlacek wrote:
> Hello,
>
> ISSUE: two possible ABNF rules (fcap-value-list, fcap-string-value) are
> defined for feature cap value. If sending entity uses fcap-value-list
> and receiving entity expects fcap-string-value (or vice verse),
> interoperability problem would occur.

I trust you know that much of this syntax has been borrowed from RFC 
3840. Do you have the same issue with RFC 3840? There are some 
differences - 3840 borrows the IANA registry and procedures for adding 
to it from RFC 2506, while proxy-feature defines a new IANA registry 
that is somewhat similar to that one. (This one is more restrictive.)

In 3840 there is no explict tie between the syntax given in the IANA 
registry and the syntax in the header value. There is an implied 
relationship, in that the value had better be representable in the 
syntax of the header or else it won't be usable.

There is a lot of complexity and ugliness in 3840 in order to mesh it 
with 2506 (lets not go into why that was done - its water over the dam), 
and to facilitate callerprefs in 3841. 3841 reuses this syntax to define 
the conditions for preferences, and it allows ranges, negations, etc. 
that are reflected here. In principle it should be possible to use 
something like:

	priority=">10"
or	duplex="!full"

But the definitions of the particular features would have to allow that. 
Currently none of them do.

One area where there could be confusion is the one you raise. In 
particular, consider:
	description="SomeText"
	description="<SomeText>"

The first is a token-nobang and the second is a string-value. The only 
behavioral difference is that tokens are compared in a case-insensitive 
way, and string-values are compared in a case-sensitive way. The 
defintion of "description" says the value is string with an equality 
relationship. If you are strict you would probably say it must be a 
string-value. But others might think a token would do. I don't think 
3840 is entirely clear here. (If I was implementing it I would allow 
either.)

> PROPOSAL: the SIP feature cap specification states whether the feature
> caps value follows fcap-value-list ABNF rule or fcap-string-value ABNF
> rule. E.g.
> -------------------------
> 4.4.3. Feature Cap Values
>
> A SIP feature cap can have an associated value, or a list of values.
> A SIP feature cap value MUST conform to the ABNF defined in Section
> 6.2.2.
>
> <new>The SIP feature cap specification MUST define whether value of the
> feature cap follows the fcap-value-list ABNF rule or the
> fcap-string-value ABNF rule.</new>

I see no reason why you couldn't, if you wished, define a feature that 
explicitly allowed values of both types.

How about

<new>The SIP feature cap specification MUST define the value(s) in 
accord with the syntax defined in section 6.2.2.</new>

	Thanks,
	Paul


From pkyzivat@alum.mit.edu  Sun Jun 10 11:16:20 2012
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Subject: Re: [sipcore] WGLC for draft-ietf-sipcore-proxy-feature-02
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The WGLC for draft-ietf-sipcore-proxy-feature-02.
Thank you to those of you who provided comments.

I didn't see any major, or unsolvable issues. Christer indicated to me 
that he is going to issue a new version that addresses the WGLC comments 
received. Then I'll be working with the ADs on advancing this.

	Thank you,
	Paul (as co-chair)

On 5/18/12 5:10 PM, Paul Kyzivat wrote:
> I am issuing a WGLC for:
>
> draft-ietf-sipcore-proxy-feature-02
> (http://tools.ietf.org/html/draft-ietf-sipcore-proxy-feature-02)
>
> The WGLC will conclude at 23:59 UTC on June 8, 2012.
>
> (I'm giving it three weeks because there are a lot of things going on at
> this time - a 3gpp meeting, some holidays, etc.)
>
> Note that this is intended to satisfy our milestone: Mechanism to
> indicate proxy capabilities to both endpoints and other intermediaries
> in the path of a REGISTER transaction or dialog-forming transaction to
> IESG (PS)
>
> I'm looking for volunteers to perform a careful review of this document.
> It would be especially good to have participation of people who haven't
> previously been closely involved. Please inform me and Adam if you are
> able to do a careful WGLC review.
>
> Thanks,
> Paul (as co-chair)
> _______________________________________________
> sipcore mailing list
> sipcore@ietf.org
> https://www.ietf.org/mailman/listinfo/sipcore
>


From ivo.sedlacek@ericsson.com  Mon Jun 11 04:23:02 2012
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From: Ivo Sedlacek <ivo.sedlacek@ericsson.com>
To: Paul Kyzivat <pkyzivat@alum.mit.edu>
Date: Mon, 11 Jun 2012 13:22:59 +0200
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Cc: "sipcore@ietf.org" <sipcore@ietf.org>
Subject: Re: [sipcore] WGLC for draft-ietf-sipcore-proxy-feature-02
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Hello,

> The first is a token-nobang and the second is a string-value. The only be=
havioral=20
> difference is that tokens are compared in a case-insensitive way, and str=
ing-values=20
> are compared in a case-sensitive way. The defintion of "description" says=
 the value=20
> is string with an equality relationship. If you are strict you would prob=
ably say=20
> it must be a string-value. But others might think a token would do. I don=
't think=20
> 3840 is entirely clear here. (If I was implementing it I would allow=20
> either.)=20
>=20
> > PROPOSAL: the SIP feature cap specification states whether the feature =
=20
> > caps value follows fcap-value-list ABNF rule or fcap-string-value ABNF =
=20
> > rule. E.g.=20
> > -------------------------=20
> > 4.4.3. Feature Cap Values=20
> >=20
> > A SIP feature cap can have an associated value, or a list of values.=20
> > A SIP feature cap value MUST conform to the ABNF defined in Section =20
> > 6.2.2.=20
> >=20
> > <new>The SIP feature cap specification MUST define whether value of =20
> > the feature cap follows the fcap-value-list ABNF rule or the =20
> > fcap-string-value ABNF rule.</new>=20
>=20
> I see no reason why you couldn't, if you wished, define a feature that ex=
plicitly=20
> allowed values of both types.=20
>=20
> How about=20
>=20
> <new>The SIP feature cap specification MUST define the value(s) in accord=
 with the=20
> syntax defined in section 6.2.2.</new>=20
>=20


OK for me.=20

Thanks for clarification.

Kind regards

Ivo Sedlacek=

From christer.holmberg@ericsson.com  Mon Jun 11 04:39:04 2012
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From: Christer Holmberg <christer.holmberg@ericsson.com>
To: Ivo Sedlacek <ivo.sedlacek@ericsson.com>, Paul Kyzivat <pkyzivat@alum.mit.edu>
Date: Mon, 11 Jun 2012 13:39:00 +0200
Thread-Topic: [sipcore] WGLC for draft-ietf-sipcore-proxy-feature-02
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Cc: "sipcore@ietf.org" <sipcore@ietf.org>
Subject: Re: [sipcore] WGLC for draft-ietf-sipcore-proxy-feature-02
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Hi,

Note that the first paragraph already contains the following sentence:

"A feature cap value MUST conform to the ABNF defined in Section 6.2.2."

But, I think it fits better in the second paragraph, so my suggestion is to=
 remove the existing sentence from the first paragraph, and add Paul's sugg=
ested sentence to the second paragraph:

		"The feature cap specification MUST define the syntax and semantics=20
		of any value defined for the feature cap, including possible=20
		restrictions related to the usage of a specific value. The feature=20
		cap specification MUST define the value(s) in accordance with the=20
		syntax defined in section 6.2.2."

Regards,

Christer







-----Original Message-----
From: sipcore-bounces@ietf.org [mailto:sipcore-bounces@ietf.org] On Behalf =
Of Ivo Sedlacek
Sent: 11. kes=E4kuuta 2012 14:23
To: Paul Kyzivat
Cc: sipcore@ietf.org
Subject: Re: [sipcore] WGLC for draft-ietf-sipcore-proxy-feature-02

Hello,

> The first is a token-nobang and the second is a string-value. The only=20
> behavioral difference is that tokens are compared in a=20
> case-insensitive way, and string-values are compared in a=20
> case-sensitive way. The defintion of "description" says the value is=20
> string with an equality relationship. If you are strict you would=20
> probably say it must be a string-value. But others might think a token=20
> would do. I don't think
> 3840 is entirely clear here. (If I was implementing it I would allow
> either.)
>=20
> > PROPOSAL: the SIP feature cap specification states whether the=20
> > feature caps value follows fcap-value-list ABNF rule or=20
> > fcap-string-value ABNF rule. E.g.
> > -------------------------
> > 4.4.3. Feature Cap Values
> >=20
> > A SIP feature cap can have an associated value, or a list of values.=20
> > A SIP feature cap value MUST conform to the ABNF defined in Section=20
> > 6.2.2.
> >=20
> > <new>The SIP feature cap specification MUST define whether value of=20
> > the feature cap follows the fcap-value-list ABNF rule or the=20
> > fcap-string-value ABNF rule.</new>
>=20
> I see no reason why you couldn't, if you wished, define a feature that=20
> explicitly allowed values of both types.
>=20
> How about
>=20
> <new>The SIP feature cap specification MUST define the value(s) in=20
> accord with the syntax defined in section 6.2.2.</new>
>=20


OK for me.=20

Thanks for clarification.

Kind regards

Ivo Sedlacek
_______________________________________________
sipcore mailing list
sipcore@ietf.org
https://www.ietf.org/mailman/listinfo/sipcore

From pkyzivat@alum.mit.edu  Mon Jun 11 04:46:11 2012
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Cc: "sipcore@ietf.org" <sipcore@ietf.org>, Ivo Sedlacek <ivo.sedlacek@ericsson.com>
Subject: Re: [sipcore] WGLC for draft-ietf-sipcore-proxy-feature-02
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WFM

On 6/11/12 1:39 PM, Christer Holmberg wrote:
> Hi,
>
> Note that the first paragraph already contains the following sentence:
>
> "A feature cap value MUST conform to the ABNF defined in Section 6.2.2."
>
> But, I think it fits better in the second paragraph, so my suggestion is to remove the existing sentence from the first paragraph, and add Paul's suggested sentence to the second paragraph:
>
> 		"The feature cap specification MUST define the syntax and semantics
> 		of any value defined for the feature cap, including possible
> 		restrictions related to the usage of a specific value. The feature
> 		cap specification MUST define the value(s) in accordance with the
> 		syntax defined in section 6.2.2."
>
> Regards,
>
> Christer
>
>
>
>
>
>
>
> -----Original Message-----
> From: sipcore-bounces@ietf.org [mailto:sipcore-bounces@ietf.org] On Behalf Of Ivo Sedlacek
> Sent: 11. kesäkuuta 2012 14:23
> To: Paul Kyzivat
> Cc: sipcore@ietf.org
> Subject: Re: [sipcore] WGLC for draft-ietf-sipcore-proxy-feature-02
>
> Hello,
>
>> The first is a token-nobang and the second is a string-value. The only
>> behavioral difference is that tokens are compared in a
>> case-insensitive way, and string-values are compared in a
>> case-sensitive way. The defintion of "description" says the value is
>> string with an equality relationship. If you are strict you would
>> probably say it must be a string-value. But others might think a token
>> would do. I don't think
>> 3840 is entirely clear here. (If I was implementing it I would allow
>> either.)
>>
>>> PROPOSAL: the SIP feature cap specification states whether the
>>> feature caps value follows fcap-value-list ABNF rule or
>>> fcap-string-value ABNF rule. E.g.
>>> -------------------------
>>> 4.4.3. Feature Cap Values
>>>
>>> A SIP feature cap can have an associated value, or a list of values.
>>> A SIP feature cap value MUST conform to the ABNF defined in Section
>>> 6.2.2.
>>>
>>> <new>The SIP feature cap specification MUST define whether value of
>>> the feature cap follows the fcap-value-list ABNF rule or the
>>> fcap-string-value ABNF rule.</new>
>>
>> I see no reason why you couldn't, if you wished, define a feature that
>> explicitly allowed values of both types.
>>
>> How about
>>
>> <new>The SIP feature cap specification MUST define the value(s) in
>> accord with the syntax defined in section 6.2.2.</new>
>>
>
>
> OK for me.
>
> Thanks for clarification.
>
> Kind regards
>
> Ivo Sedlacek
> _______________________________________________
> sipcore mailing list
> sipcore@ietf.org
> https://www.ietf.org/mailman/listinfo/sipcore
>


From internet-drafts@ietf.org  Mon Jun 11 05:32:26 2012
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Subject: [sipcore] I-D Action: draft-ietf-sipcore-proxy-feature-03.txt
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A New Internet-Draft is available from the on-line Internet-Drafts director=
ies. This draft is a work item of the Session Initiation Protocol Core Work=
ing Group of the IETF.

	Title           : Mechanism to indicate support of features and capabiliti=
es in the Session Initiation Protocol (SIP)
	Author(s)       : Christer Holmberg
                          Ivo Sedlacek
                          Hadriel Kaplan
	Filename        : draft-ietf-sipcore-proxy-feature-03.txt
	Pages           : 18
	Date            : 2012-06-11

   This specification creates a new IANA registry, "Feature Cap
   Registry", for registering "feature caps", which are used by SIP
   entities not represented by the URI of the Contact header field to
   indicate support of features and capabilities, where media feature
   tags cannot be used to indicate the support.

   This specification also defines a new SIP header field, Feature-Caps,
   to convey feature caps in SIP messages.


A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-sipcore-proxy-feature-03.txt

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/

This Internet-Draft can be retrieved at:
ftp://ftp.ietf.org/internet-drafts/draft-ietf-sipcore-proxy-feature-03.txt

The IETF datatracker page for this Internet-Draft is:
https://datatracker.ietf.org/doc/draft-ietf-sipcore-proxy-feature/


From christer.holmberg@ericsson.com  Mon Jun 11 05:45:59 2012
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From: Christer Holmberg <christer.holmberg@ericsson.com>
To: Paul Kyzivat <pkyzivat@alum.mit.edu>, "sipcore@ietf.org" <sipcore@ietf.org>
Date: Mon, 11 Jun 2012 14:45:52 +0200
Thread-Topic: Draft new version: draft-ietf-sipcore-proxy-feature-03 [was: [sipcore] WGLC for draft-ietf-sipcore-proxy-feature-02]
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Subject: [sipcore] Draft new version: draft-ietf-sipcore-proxy-feature-03 [was: WGLC for draft-ietf-sipcore-proxy-feature-02]
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Hi,

I've submitted a new version (-03) of the draft, based on the WGLC comments=
.

All comments should be addressed, but I ask the people who gave comments to=
 double check :)

Thank You!

Regards,

Christer


-----Original Message-----
From: sipcore-bounces@ietf.org [mailto:sipcore-bounces@ietf.org] On Behalf =
Of Paul Kyzivat
Sent: 10. kes=E4kuuta 2012 21:16
To: sipcore@ietf.org
Subject: Re: [sipcore] WGLC for draft-ietf-sipcore-proxy-feature-02

The WGLC for draft-ietf-sipcore-proxy-feature-02.
Thank you to those of you who provided comments.

I didn't see any major, or unsolvable issues. Christer indicated to me that=
 he is going to issue a new version that addresses the WGLC comments receiv=
ed. Then I'll be working with the ADs on advancing this.

	Thank you,
	Paul (as co-chair)

On 5/18/12 5:10 PM, Paul Kyzivat wrote:
> I am issuing a WGLC for:
>
> draft-ietf-sipcore-proxy-feature-02
> (http://tools.ietf.org/html/draft-ietf-sipcore-proxy-feature-02)
>
> The WGLC will conclude at 23:59 UTC on June 8, 2012.
>
> (I'm giving it three weeks because there are a lot of things going on=20
> at this time - a 3gpp meeting, some holidays, etc.)
>
> Note that this is intended to satisfy our milestone: Mechanism to=20
> indicate proxy capabilities to both endpoints and other intermediaries=20
> in the path of a REGISTER transaction or dialog-forming transaction to=20
> IESG (PS)
>
> I'm looking for volunteers to perform a careful review of this document.
> It would be especially good to have participation of people who=20
> haven't previously been closely involved. Please inform me and Adam if=20
> you are able to do a careful WGLC review.
>
> Thanks,
> Paul (as co-chair)
> _______________________________________________
> sipcore mailing list
> sipcore@ietf.org
> https://www.ietf.org/mailman/listinfo/sipcore
>

_______________________________________________
sipcore mailing list
sipcore@ietf.org
https://www.ietf.org/mailman/listinfo/sipcore

From pkyzivat@alum.mit.edu  Tue Jun 12 13:53:23 2012
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Subject: Re: [sipcore] Draft new version: draft-ietf-sipcore-proxy-feature-03 [was: WGLC for draft-ietf-sipcore-proxy-feature-02]
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On 6/11/12 2:45 PM, Christer Holmberg wrote:
> Hi,
>
> I've submitted a new version (-03) of the draft, based on the WGLC comments.
>
> All comments should be addressed, but I ask the people who gave comments to double check :)

Christer: I must appologize for finding things now that I should have 
found myself during WGLC. Mostly superficial, but for the last one.

Name of the IANA registry:

I think we should give this careful thought, perhaps including the IANA 
person in the discussion. I know I frequently have difficulty finding 
very common registries because I can't remember what they are called.
Looking the root of the iana registry (http://www.iana.org/protocols) I 
find that there is a section labeled "Session Initiation Protocol (SIP) 
Parameters". And under that are "Header Fields", "Resource-Priority 
Priority Values", ...

Some of the names there are good, and others not so good.

I also see that there is a section called "Media Feature Tags", and 
under it "features.global-tree", features.sip-tree", ...

I think we want this registry included in the SIP Parameters section. 
And I think an easy to find name there might be "Proxy-Feature 
sip-tree". I don't know if anything must be done to get this into the 
proper section. I guess we ask IANA that.

Alternatively, I guess we could consider adding 
"proxy-features.sip-tree" to the Media Feature Tags section.

Either way, we need to find out what to say to get IANA to do it that way.

Naming of 4.2.2 vs. 4.2.3:

These sections define the two trees. 4.2.2 clearly identifies its tree, 
  but 4.2.3 does not. I think its section name should be "SIP Tree".

Security Considerations:

As I look at it, I realize that this was just a placeholder.

    Feature caps can provide sensitive information about a SIP entity.
    RFC 3840 cautions against providing sensitive information to another
    party.  Once this information is given out, any use may be made of
    it.

Its nice that 3840 has cautions, but how does that affect *this* draft?

Perhaps the original intent was to reuse the security considerations 
from 3840 by reference? I don't think that will fly.

I think the security considerations from 3840 might be mined/adapted to 
produce something comparable for here. But its a non-trivial adaptation.

I'm sorry to have found this so late. But this will be ripped apart by 
the IESG if it isn't dealt with. Even once something meaningful is put 
in here we are likely to get some comments about it. (They are very hard 
to avoid.)

	Thanks,
	Paul

From christer.holmberg@ericsson.com  Wed Jun 13 02:31:18 2012
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From: Christer Holmberg <christer.holmberg@ericsson.com>
To: Paul Kyzivat <pkyzivat@alum.mit.edu>
Date: Wed, 13 Jun 2012 11:31:14 +0200
Thread-Topic: Draft new version: draft-ietf-sipcore-proxy-feature-03 [was: [sipcore] WGLC for draft-ietf-sipcore-proxy-feature-02] - Paul's comments on IANA and tree names
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Subject: Re: [sipcore] Draft new version: draft-ietf-sipcore-proxy-feature-03 [was: WGLC for draft-ietf-sipcore-proxy-feature-02] - Paul's comments on IANA and tree names
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Hi,

>> I've submitted a new version (-03) of the draft, based on the WGLC comme=
nts.
>>
>> All comments should be addressed, but I ask the people who gave comments=
 to double check :)
>
> Christer: I must appologize for finding things now that I should have
> found myself during WGLC. Mostly superficial, but for the last one.
>
> Name of the IANA registry:
>
> I think we should give this careful thought, perhaps including the IANA
> person in the discussion. I know I frequently have difficulty finding
> very common registries because I can't remember what they are called.
> Looking the root of the iana registry (http://www.iana.org/protocols) I
> find that there is a section labeled "Session Initiation Protocol (SIP)
> Parameters". And under that are "Header Fields", "Resource-Priority
> Priority Values", ...
>
> Some of the names there are good, and others not so good.
>
> I also see that there is a section called "Media Feature Tags", and
> under it "features.global-tree", features.sip-tree", ...
>
> I think we want this registry included in the SIP Parameters section.
> And I think an easy to find name there might be "Proxy-Feature
> sip-tree". I don't know if anything must be done to get this into the
> proper section. I guess we ask IANA that.
>
> Alternatively, I guess we could consider adding
> "proxy-features.sip-tree" to the Media Feature Tags section.

I don't think we should do that, as we previously decided not to use media =
feature tags for this.

> Either way, we need to find out what to say to get IANA to do it that way=
.

I suggest that the draft requests IANA to create a new sub directory under =
the "SIP Parameters" registry.

We'll then deal with the detail once the draft reaches IANA.

So, the text could look like:


"7.2. SIP Feature Caps Trees

   This specification creates a new sub registry to the IANA "Session Initi=
ation Protocol (SIP) Parameters"
   Protocol Registry, per the guidelines in RFC 5226 [RFC5226].=20
   The name of the sub directory is "SIP Feature Caps Trees".

7.2.1  Global Registration Tree

   This specification creates a new feature cap tree in the IANA "SIP Featu=
re Caps Trees" registry. =20
   The name of the tree is "Global Feature Cap Registration Tree", and its =
leading facet
   is "g.".  It is used for the registration of feature caps.
  =20
   The addition of entries into this tree occurs through the Expert
   Review policies, as defined in RFC 5226 [RFC5226].  A designated area
   expert will review the proposed SIP feature cap, and consult with
   members of related mailing lists.  The information required in the
   registration is defined in Section 4.3 of RFC XXX.
  =20
   Note that all feature caps registered in the SIP tree will have names
   with a leading facet "g.".  No leading "+" is used in the
   registrations in any of the media feature tag trees.

7.2.2  SIP Feature Cap Registration Tree

   This specification creates a new feature cap tree in the IANA "SIP Featu=
re Caps Trees" registry
   The name of the tree is "Feature Cap Registration Tree", and its leading=
 facet is "sip.".  It is used for
   the registration of feature caps.
  =20
   The addition of entries into this tree occurs through the IETF
   Consensus, as defined in RFC 5226.  This requires the publication of
   an RFC that contains the registration.  The information required in
   the registration is defined in Section 4.3 of RFC XXX.
  =20
   Note that all feature caps registered in the SIP tree will have names
   with a leading facet "sip.".  No leading "+" is used in the
   registrations in any of the media feature tag trees."


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


> Naming of 4.2.2 vs. 4.2.3:
>
> These sections define the two trees. 4.2.2 clearly identifies its tree,
> but 4.2.3 does not. I think its section name should be "SIP Tree".

I agree. I'll change that.

(I'll do the same change in the IANA considerations section).

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

Regards,

Christer=

From christer.holmberg@ericsson.com  Wed Jun 13 08:54:54 2012
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From: Christer Holmberg <christer.holmberg@ericsson.com>
To: Paul Kyzivat <pkyzivat@alum.mit.edu>
Date: Wed, 13 Jun 2012 17:54:48 +0200
Thread-Topic: Draft new version: draft-ietf-sipcore-proxy-feature-03 [was: [sipcore] WGLC for draft-ietf-sipcore-proxy-feature-02] - Paul's comment on security considerations
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Subject: Re: [sipcore] Draft new version: draft-ietf-sipcore-proxy-feature-03 [was: WGLC for draft-ietf-sipcore-proxy-feature-02] - Paul's comment on security considerations
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Hi,

> Security Considerations:
>
> As I look at it, I realize that this was just a placeholder.
>
>    Feature caps can provide sensitive information about a SIP entity.
>    RFC 3840 cautions against providing sensitive information to another
>    party.  Once this information is given out, any use may be made of
>    it.
>
> Its nice that 3840 has cautions, but how does that affect *this* draft?
>
> Perhaps the original intent was to reuse the security considerations
> from 3840 by reference? I don't think that will fly.

That was the intention, yes.

> I think the security considerations from 3840 might be mined/adapted to
> produce something comparable for here. But its a non-trivial adaptation.
>
> I'm sorry to have found this so late. But this will be ripped apart by
> the IESG if it isn't dealt with. Even once something meaningful is put
> in here we are likely to get some comments about it. (They are very hard
> to avoid.)

So, instead of simply refering to 3840, I suggest some explicit text, based=
 on the 3840 text.

Note, however, that most of the 3840 security issues apply to UAs. In addit=
ion, the 3841 issue
of 3840 does not apply, as the 3841 mechanism cannot be used with feature c=
aps.

Suggested text:

"8.  Security Considerations

   The security issues for feature caps are similar to the ones defined
   in RFC 3840 for media feature tags. However, as feature caps will
   typically not be used to convey capability information of end-user devic=
es,
   those aspects of RFC 3840 do not apply to feature caps.

   In addition, the RFC 3840 security issue regarding an attacker using the=
=20
   SIP caller preferences extension [ref-to-3841] in order to affect
   routing decisions does not apply, as the mechanism is not defined to
   be used with feature caps.

   Feature caps can provide capability and characteristics information=20
   about the SIP entity, some of which might be sensitive. The=20
   Feature-Caps header field does not convey address information about=20
   SIP entities. However, individual feature caps might provide address=20
   information as feature cap values. Therefor, mechanisms for=20
   guaranteeing confidentiality and authenticity SHOULD be provided."

Regards,

Christer=

From pkyzivat@alum.mit.edu  Wed Jun 13 20:03:28 2012
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Subject: Re: [sipcore] Draft new version: draft-ietf-sipcore-proxy-feature-03 [was: WGLC for draft-ietf-sipcore-proxy-feature-02] - Paul's comments on IANA and tree names
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Hi Christer,

A few comments inline.

	Thanks,
	Paul

On 6/13/12 11:31 AM, Christer Holmberg wrote:
> Hi,
>
>>> I've submitted a new version (-03) of the draft, based on the WGLC comments.
>>>
>>> All comments should be addressed, but I ask the people who gave comments to double check :)
>>
>> Christer: I must appologize for finding things now that I should have
>> found myself during WGLC. Mostly superficial, but for the last one.
>>
>> Name of the IANA registry:
>>
>> I think we should give this careful thought, perhaps including the IANA
>> person in the discussion. I know I frequently have difficulty finding
>> very common registries because I can't remember what they are called.
>> Looking the root of the iana registry (http://www.iana.org/protocols) I
>> find that there is a section labeled "Session Initiation Protocol (SIP)
>> Parameters". And under that are "Header Fields", "Resource-Priority
>> Priority Values", ...
>>
>> Some of the names there are good, and others not so good.
>>
>> I also see that there is a section called "Media Feature Tags", and
>> under it "features.global-tree", features.sip-tree", ...
>>
>> I think we want this registry included in the SIP Parameters section.
>> And I think an easy to find name there might be "Proxy-Feature
>> sip-tree". I don't know if anything must be done to get this into the
>> proper section. I guess we ask IANA that.
>>
>> Alternatively, I guess we could consider adding
>> "proxy-features.sip-tree" to the Media Feature Tags section.
>
> I don't think we should do that, as we previously decided not to use media feature tags for this.

Fine.

>> Either way, we need to find out what to say to get IANA to do it that way.
>
> I suggest that the draft requests IANA to create a new sub directory under the "SIP Parameters" registry.
> We'll then deal with the detail once the draft reaches IANA.

ok

> So, the text could look like:
>
>
> "7.2. SIP Feature Caps Trees
>
>     This specification creates a new sub registry to the IANA "Session Initiation Protocol (SIP) Parameters"
>     Protocol Registry, per the guidelines in RFC 5226 [RFC5226].
>     The name of the sub directory is "SIP Feature Caps Trees".

Because the header name is Proxy-Feature, ISTM that people looking to 
register new values are likely to be looking for that name. So it would 
be good for that to be in there somewhere. Also, since its under the SIP 
parameters registry, I don't think it needs to have "SIP" in its name. 
When I look at the registry some do have SIP and some don't, but the 
ones without seem more natural. So perhaps:

Proxy-Feature trees, or
Proxy-Feature Feature Caps trees

I just know from experience that it can be hard to find something in the 
iana registries, so making it easy to search for is helpful.

> 7.2.1  Global Registration Tree
>
>     This specification creates a new feature cap tree in the IANA "SIP Feature Caps Trees" registry.
>     The name of the tree is "Global Feature Cap Registration Tree", and its leading facet
>     is "g.".  It is used for the registration of feature caps.
>
>     The addition of entries into this tree occurs through the Expert
>     Review policies, as defined in RFC 5226 [RFC5226].  A designated area
>     expert will review the proposed SIP feature cap, and consult with
>     members of related mailing lists.  The information required in the
>     registration is defined in Section 4.3 of RFC XXX.
>
>     Note that all feature caps registered in the SIP tree will have names
>     with a leading facet "g.".  No leading "+" is used in the
>     registrations in any of the media feature tag trees.
>
> 7.2.2  SIP Feature Cap Registration Tree
>
>     This specification creates a new feature cap tree in the IANA "SIP Feature Caps Trees" registry
>     The name of the tree is "Feature Cap Registration Tree",

No, that isn't its name. It is "SIP Feature Cap Registration Tree"

>     and its leading facet is "sip.".  It is used for
>     the registration of feature caps.
>
>     The addition of entries into this tree occurs through the IETF
>     Consensus, as defined in RFC 5226.  This requires the publication of
>     an RFC that contains the registration.  The information required in
>     the registration is defined in Section 4.3 of RFC XXX.
>
>     Note that all feature caps registered in the SIP tree will have names
>     with a leading facet "sip.".  No leading "+" is used in the
>     registrations in any of the media feature tag trees."
>
>
> ---------------------------
>
>
>> Naming of 4.2.2 vs. 4.2.3:
>>
>> These sections define the two trees. 4.2.2 clearly identifies its tree,
>> but 4.2.3 does not. I think its section name should be "SIP Tree".
>
> I agree. I'll change that.
>
> (I'll do the same change in the IANA considerations section).
>
> ---------------------------
>
> Regards,
>
> Christer


From christer.holmberg@ericsson.com  Wed Jun 13 23:42:35 2012
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From: Christer Holmberg <christer.holmberg@ericsson.com>
To: Paul Kyzivat <pkyzivat@alum.mit.edu>
Date: Thu, 14 Jun 2012 08:42:31 +0200
Thread-Topic: Draft new version: draft-ietf-sipcore-proxy-feature-03 [was: [sipcore] WGLC for draft-ietf-sipcore-proxy-feature-02] - Paul's comments on IANA and tree names
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Subject: Re: [sipcore] Draft new version: draft-ietf-sipcore-proxy-feature-03 [was: WGLC for draft-ietf-sipcore-proxy-feature-02] - Paul's comments on IANA and tree names
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Hi,

>> So, the text could look like:
>>
>>
>> "7.2. SIP Feature Caps Trees
>>
>>     This specification creates a new sub registry to the IANA "Session I=
nitiation Protocol (SIP) Parameters"
>>     Protocol Registry, per the guidelines in RFC 5226 [RFC5226].
>>     The name of the sub directory is "SIP Feature Caps Trees".
>
> Because the header name is Proxy-Feature, ISTM that people looking to reg=
ister new values are likely to be looking for that name. So it would be goo=
d for that to be in there somewhere. Also, since its under the SIP paramete=
rs registry, I don't think it=20
> needs to have "SIP" in its name.=20
> When I look at the registry some do have SIP and some don't, but the ones=
 without seem more natural. So perhaps:
>
> Proxy-Feature trees, or
> Proxy-Feature Feature Caps trees
>
> I just know from experience that it can be hard to find something in the =
iana registries, so making it easy to search for is helpful.

Ok.

I'll change to "Proxy-Feature Feature Caps trees", as suggested.


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


>> 7.2.1  Global Registration Tree
>>
>>     This specification creates a new feature cap tree in the IANA "SIP F=
eature Caps Trees" registry.
>>     The name of the tree is "Global Feature Cap Registration Tree", and =
its leading facet
>>     is "g.".  It is used for the registration of feature caps.
>>
>>     The addition of entries into this tree occurs through the Expert
>>     Review policies, as defined in RFC 5226 [RFC5226].  A designated are=
a
>>     expert will review the proposed SIP feature cap, and consult with
>>     members of related mailing lists.  The information required in the
>>     registration is defined in Section 4.3 of RFC XXX.
>>
>>     Note that all feature caps registered in the SIP tree will have name=
s
>>     with a leading facet "g.".  No leading "+" is used in the
>>     registrations in any of the media feature tag trees.
>>
>> 7.2.2  SIP Feature Cap Registration Tree
>>
>>     This specification creates a new feature cap tree in the IANA "SIP F=
eature Caps Trees" registry
>>     The name of the tree is "Feature Cap Registration Tree",
>
> No, that isn't its name. It is "SIP Feature Cap Registration Tree"

Correct. I'll fix that.

Regards,

Christer


From internet-drafts@ietf.org  Thu Jun 14 03:29:10 2012
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Subject: [sipcore] I-D Action: draft-ietf-sipcore-proxy-feature-04.txt
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A New Internet-Draft is available from the on-line Internet-Drafts director=
ies.
 This draft is a work item of the Session Initiation Protocol Core Working =
Group of the IETF.

	Title           : Mechanism to indicate support of features and capabiliti=
es in the Session Initiation Protocol (SIP)
	Author(s)       : Christer Holmberg
                          Ivo Sedlacek
                          Hadriel Kaplan
	Filename        : draft-ietf-sipcore-proxy-feature-04.txt
	Pages           : 19
	Date            : 2012-06-14

Abstract:
   This specification creates a new IANA registry, "Proxy-Feature
   Feature Caps Trees", for registering "feature caps", which are used
   by SIP entities not represented by the URI of the Contact header
   field to indicate support of features and capabilities, where media
   feature tags cannot be used to indicate the support.

   This specification also defines a new SIP header field, Feature-Caps,
   to convey feature caps in SIP messages.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-sipcore-proxy-feature

There's also a htmlized version available at:
http://tools.ietf.org/html/draft-ietf-sipcore-proxy-feature-04

A diff from previous version is available at:
http://tools.ietf.org/rfcdiff?url2=3Ddraft-ietf-sipcore-proxy-feature-04


Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/


From christer.holmberg@ericsson.com  Thu Jun 14 03:31:25 2012
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From: Christer Holmberg <christer.holmberg@ericsson.com>
To: "sipcore@ietf.org" <sipcore@ietf.org>
Date: Thu, 14 Jun 2012 12:31:20 +0200
Thread-Topic: Draft new version: draft-ietf-sipcore-proxy-feature-04
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Subject: [sipcore] Draft new version: draft-ietf-sipcore-proxy-feature-04
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Hi,

Based on the comments from Paul, I've submitted a new version (-04) of the =
proxy feature draft.

In the Security Considerations section, the reference to 3840 has been repl=
aced with actual text.

The IANA registry request has been modified, based on Paul's comments.

Some additional editorial changes.

Regards,

Christer

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nk=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span lang=3DFI>=
Hi,<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DFI><o:p>&nbsp;</=
o:p></span></p><p class=3DMsoNormal>Based on the comments from Paul, I&#821=
7;ve submitted a new version (-04) of the proxy feature draft.<o:p></o:p></=
p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>In the Sec=
urity Considerations section, the reference to 3840 has been replaced with =
actual text.<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p cla=
ss=3DMsoNormal>The IANA registry request has been modified, based on Paul&#=
8217;s comments.<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p=
 class=3DMsoNormal>Some additional editorial changes.<o:p></o:p></p><p clas=
s=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>Regards,<o:p></o:p>=
</p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>Christer=
<o:p></o:p></p></div></body></html>=

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From christer.holmberg@ericsson.com  Wed Jun 20 22:41:29 2012
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From: Christer Holmberg <christer.holmberg@ericsson.com>
To: "sipcore@ietf.org" <sipcore@ietf.org>
Date: Thu, 21 Jun 2012 07:41:24 +0200
Thread-Topic: Draft new: draft-holmberg-sipcore-rkeep-00
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Subject: [sipcore] Draft new: draft-holmberg-sipcore-rkeep-00
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Hi,

I've submitted a new draft, draft-holmberg-sipcore-rkeep, which defines a m=
echanism for a SIP entity to indicate willingness to receive keep-alives fr=
om an adjacent entity.

The mechanism is based on RFC 6223, which defines a similar mechanism for i=
ndicating willingness to send keep-alives.

The need for this comes from the smart phone environment.  In some cases a =
SIP device, located behind a NAT, is not able to send
keep-alives.  One reason can be that the scheduling policy of the operating=
 system used by the SIP device does not meet the requirement
for sending keep-alives using a proper frequency, meaning that NAT bindings=
 might not be kept.  In such cases, the device needs to
request another device to send keep-alives towards the itself.  Then,  the =
keep-alive response message sent from the SIP device will ensure
that the NAT binding is kept open.

RFC 6223, and this draft, defines the usage of STUN for the keep-alives, so=
 the STUN response will act as the keep-alive.
Regards,

Christer

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nk=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span lang=3DFI>=
Hi,<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DFI><o:p>&nbsp;</=
o:p></span></p><p class=3DMsoNormal>I&#8217;ve submitted a new draft, draft=
-holmberg-sipcore-rkeep, which defines a mechanism for a SIP entity to indi=
cate willingness to receive keep-alives from an adjacent entity.<o:p></o:p>=
</p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>The mech=
anism is based on RFC 6223, which defines a similar mechanism for indicatin=
g willingness to send keep-alives.<o:p></o:p></p><p class=3DMsoNormal><o:p>=
&nbsp;</o:p></p><p class=3DMsoNormal>The need for this comes from the smart=
 phone environment. &nbsp;In some cases a SIP device, located behind a NAT,=
 is not able to send<o:p></o:p></p><p class=3DMsoNormal>keep-alives.&nbsp; =
One reason can be that the scheduling policy of the operating system used b=
y the SIP device does not meet the requirement<o:p></o:p></p><p class=3DMso=
Normal>for sending keep-alives using a proper frequency, meaning that NAT b=
indings might not be kept.&nbsp; In such cases, the device needs to<o:p></o=
:p></p><p class=3DMsoNormal>request another device to send keep-alives towa=
rds the itself.&nbsp; Then, &nbsp;the keep-alive response message sent from=
 the SIP device will ensure<o:p></o:p></p><p class=3DMsoNormal> that the NA=
T binding is kept open.<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p=
></p><p class=3DMsoNormal>RFC 6223, and this draft, defines the usage of ST=
UN for the keep-alives, so the STUN response will act as the keep-alive.<o:=
p></o:p></p><p class=3DMsoNormal> <o:p></o:p></p><p class=3DMsoNormal>Regar=
ds,<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoN=
ormal>Christer<o:p></o:p></p></div></body></html>=

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From keith.drage@alcatel-lucent.com  Thu Jun 21 07:24:13 2012
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From: "DRAGE, Keith (Keith)" <keith.drage@alcatel-lucent.com>
To: "sipcore@ietf.org" <sipcore@ietf.org>
Date: Thu, 21 Jun 2012 16:23:50 +0200
Thread-Topic: [sipcore] I-D Action: draft-ietf-sipcore-proxy-feature-04.txt
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Subject: Re: [sipcore] I-D Action: draft-ietf-sipcore-proxy-feature-04.txt
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Some comments on this version:

1)	Both the abstract and introduction give the viewpoint that the prime fun=
ction of this document is to create a registry. The protocol creation part =
is just an afterthought. To me both the abstract and introduction should re=
flect the SIP extension that is defined in the document, i.e. that a new he=
ader field is defined to indicate support of capabilities. I would certainl=
y omit the IANA registry part from the abstract, and only put it right at t=
he end of the introduction.=20

2)	In the respect of the above comment, I would also put section 5 before s=
ection 4.

3)	Can we use "feature capabilities" rather than "feature caps" except when=
 we are referring to the header field or tag coding.=20

4)	I would propose pulling section 4.3 and 4.4 out to become a main section=
. It's scope is different from the remainder of the document, i.e. this is =
what specifiers of a new feature capability have to document, rather than t=
he protocol which they need to implement.

5)	Section 5.1, 3rd paragraph.=20

   The feature cap specification MUST specify for which SIP methods and
   message types, and the associated semantics, the feature cap is
   applicable.  See Section 4 for more information.  No semantics is
   defined for feature caps present in SIP methods and message types not
   covered by the associated feature cap specification.

As written, this belongs in section 4.4 rather than section 5.=20

It also needs a reference to section 5.3.2 (1st paragraph), to section 5.3.=
3 (1st paragraph) and to section 5.3.4 (1st paragraph) which provides the g=
eneral constraints.

6)	Section 5.1, last paragraph:

   Within a given Feature-Caps header field, feature caps are listed in
   a non-priority order, and for a given header field any order of
   listed SIP feature caps have the same meaning.  For example,
   "foo;bar" and "bar;foo" have the same meaning (i.e. that the SIP
   entity that inserted the feature caps supports the features and
   capabilities associated with the "foo" and "bar" feature caps.

What is the meaning of the words "for a given header field". Surely they al=
l appear in the same header field? Is this some hangover text from a previo=
us solution?

7)	Section 5.2.1, 2nd paragraph:

   When a SIP entity receives a SIP request, or response, that contains
   one or more Feature-Caps header fields, the feature caps in the
   header field inform the entity about the features and capabilities
   supported by the entities that inserted the header fields.
   Procedures how features and capabilities are invoked are outside the
   scope of this specification, and MUST be described by individual
   feature cap specifications.

I find this paragraph a little misleading, as it implies that the receiver =
of the header field understands from the contents which entities in the mes=
sage path inserted the particular feature capability. This is untrue, all t=
he receiver knows is the order they were included, which may give some form=
 of indication of nearness, but nothing beyond that.

8)	Section 5.2.3. This section covers registrar behaviour for a REGISTER me=
thod, but is the registrar not also the endpoint for SUBSCRIBE/NOTIFY when =
the reg event package is used.

9)	Section 5.3.1, 1st paragraph:

   This Section describes the general usage and semantics of the
   Feature-Caps header field for different SIP message types and
   response codes.  The usage and semantics of a specific feature cap
   MUST be described in the associated feature cap specification.

As a normative requirement this belongs in section 4.4.





Regards

Keith

-----Original Message-----
From: sipcore-bounces@ietf.org [mailto:sipcore-bounces@ietf.org] On Behalf =
Of internet-drafts@ietf.org
Sent: 14 June 2012 11:29
To: i-d-announce@ietf.org
Cc: sipcore@ietf.org
Subject: [sipcore] I-D Action: draft-ietf-sipcore-proxy-feature-04.txt


A New Internet-Draft is available from the on-line Internet-Drafts director=
ies.
 This draft is a work item of the Session Initiation Protocol Core Working =
Group of the IETF.

	Title           : Mechanism to indicate support of features and capabiliti=
es in the Session Initiation Protocol (SIP)
	Author(s)       : Christer Holmberg
                          Ivo Sedlacek
                          Hadriel Kaplan
	Filename        : draft-ietf-sipcore-proxy-feature-04.txt
	Pages           : 19
	Date            : 2012-06-14

Abstract:
   This specification creates a new IANA registry, "Proxy-Feature
   Feature Caps Trees", for registering "feature caps", which are used
   by SIP entities not represented by the URI of the Contact header
   field to indicate support of features and capabilities, where media
   feature tags cannot be used to indicate the support.

   This specification also defines a new SIP header field, Feature-Caps,
   to convey feature caps in SIP messages.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-sipcore-proxy-feature

There's also a htmlized version available at:
http://tools.ietf.org/html/draft-ietf-sipcore-proxy-feature-04

A diff from previous version is available at:
http://tools.ietf.org/rfcdiff?url2=3Ddraft-ietf-sipcore-proxy-feature-04


Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/

_______________________________________________
sipcore mailing list
sipcore@ietf.org
https://www.ietf.org/mailman/listinfo/sipcore

From keith.drage@alcatel-lucent.com  Thu Jun 21 08:42:22 2012
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From: "DRAGE, Keith (Keith)" <keith.drage@alcatel-lucent.com>
To: "sipcore@ietf.org" <sipcore@ietf.org>
Date: Thu, 21 Jun 2012 17:42:14 +0200
Thread-Topic: [sipcore] I-D Action: draft-ietf-sipcore-proxy-feature-04.txt
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One additional comment.

10)	Is " feature-cap" in the ABNF formally a header field parameter in the =
manner it is defined? As such should it have some representation in the hea=
der field parameters table?=20

I agree this is presumably covered in full detail by the other IANA registr=
ations, but surely there should be at least a pointer in the header field p=
arameters table.

Keith

-----Original Message-----
From: DRAGE, Keith (Keith)=20
Sent: 21 June 2012 15:24
To: sipcore@ietf.org
Subject: RE: [sipcore] I-D Action: draft-ietf-sipcore-proxy-feature-04.txt

Some comments on this version:

1)	Both the abstract and introduction give the viewpoint that the prime fun=
ction of this document is to create a registry. The protocol creation part =
is just an afterthought. To me both the abstract and introduction should re=
flect the SIP extension that is defined in the document, i.e. that a new he=
ader field is defined to indicate support of capabilities. I would certainl=
y omit the IANA registry part from the abstract, and only put it right at t=
he end of the introduction.=20

2)	In the respect of the above comment, I would also put section 5 before s=
ection 4.

3)	Can we use "feature capabilities" rather than "feature caps" except when=
 we are referring to the header field or tag coding.=20

4)	I would propose pulling section 4.3 and 4.4 out to become a main section=
. It's scope is different from the remainder of the document, i.e. this is =
what specifiers of a new feature capability have to document, rather than t=
he protocol which they need to implement.

5)	Section 5.1, 3rd paragraph.=20

   The feature cap specification MUST specify for which SIP methods and
   message types, and the associated semantics, the feature cap is
   applicable.  See Section 4 for more information.  No semantics is
   defined for feature caps present in SIP methods and message types not
   covered by the associated feature cap specification.

As written, this belongs in section 4.4 rather than section 5.=20

It also needs a reference to section 5.3.2 (1st paragraph), to section 5.3.=
3 (1st paragraph) and to section 5.3.4 (1st paragraph) which provides the g=
eneral constraints.

6)	Section 5.1, last paragraph:

   Within a given Feature-Caps header field, feature caps are listed in
   a non-priority order, and for a given header field any order of
   listed SIP feature caps have the same meaning.  For example,
   "foo;bar" and "bar;foo" have the same meaning (i.e. that the SIP
   entity that inserted the feature caps supports the features and
   capabilities associated with the "foo" and "bar" feature caps.

What is the meaning of the words "for a given header field". Surely they al=
l appear in the same header field? Is this some hangover text from a previo=
us solution?

7)	Section 5.2.1, 2nd paragraph:

   When a SIP entity receives a SIP request, or response, that contains
   one or more Feature-Caps header fields, the feature caps in the
   header field inform the entity about the features and capabilities
   supported by the entities that inserted the header fields.
   Procedures how features and capabilities are invoked are outside the
   scope of this specification, and MUST be described by individual
   feature cap specifications.

I find this paragraph a little misleading, as it implies that the receiver =
of the header field understands from the contents which entities in the mes=
sage path inserted the particular feature capability. This is untrue, all t=
he receiver knows is the order they were included, which may give some form=
 of indication of nearness, but nothing beyond that.

8)	Section 5.2.3. This section covers registrar behaviour for a REGISTER me=
thod, but is the registrar not also the endpoint for SUBSCRIBE/NOTIFY when =
the reg event package is used.

9)	Section 5.3.1, 1st paragraph:

   This Section describes the general usage and semantics of the
   Feature-Caps header field for different SIP message types and
   response codes.  The usage and semantics of a specific feature cap
   MUST be described in the associated feature cap specification.

As a normative requirement this belongs in section 4.4.





Regards

Keith

-----Original Message-----
From: sipcore-bounces@ietf.org [mailto:sipcore-bounces@ietf.org] On Behalf =
Of internet-drafts@ietf.org
Sent: 14 June 2012 11:29
To: i-d-announce@ietf.org
Cc: sipcore@ietf.org
Subject: [sipcore] I-D Action: draft-ietf-sipcore-proxy-feature-04.txt


A New Internet-Draft is available from the on-line Internet-Drafts director=
ies.
 This draft is a work item of the Session Initiation Protocol Core Working =
Group of the IETF.

	Title           : Mechanism to indicate support of features and capabiliti=
es in the Session Initiation Protocol (SIP)
	Author(s)       : Christer Holmberg
                          Ivo Sedlacek
                          Hadriel Kaplan
	Filename        : draft-ietf-sipcore-proxy-feature-04.txt
	Pages           : 19
	Date            : 2012-06-14

Abstract:
   This specification creates a new IANA registry, "Proxy-Feature
   Feature Caps Trees", for registering "feature caps", which are used
   by SIP entities not represented by the URI of the Contact header
   field to indicate support of features and capabilities, where media
   feature tags cannot be used to indicate the support.

   This specification also defines a new SIP header field, Feature-Caps,
   to convey feature caps in SIP messages.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-sipcore-proxy-feature

There's also a htmlized version available at:
http://tools.ietf.org/html/draft-ietf-sipcore-proxy-feature-04

A diff from previous version is available at:
http://tools.ietf.org/rfcdiff?url2=3Ddraft-ietf-sipcore-proxy-feature-04


Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/

_______________________________________________
sipcore mailing list
sipcore@ietf.org
https://www.ietf.org/mailman/listinfo/sipcore

From adam@nostrum.com  Thu Jun 21 11:54:19 2012
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Date: Thu, 21 Jun 2012 13:54:18 -0500
From: Adam Roach - SIPCORE Chair <adam@nostrum.com>
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Subject: [sipcore] Call for adoption & WGLC: draft-barnes-sipcore-rfc4244bis-callflows
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[as chair]

SIPCORE Working Group:

As you are probably aware, back in June of 2010, we decided to split the 
History-Info callflows out of the (already adopted) document 
draft-ietf-sipcore-rfc4244bis. The callflows document was not formally 
adopted by the working group, but remains an important informational 
companion to the base specification.

As part of the publication process, then, we would like to see 
draft-barnes-sipcore-rfc4244bis-callflows sent to the RFC editor at the 
same time as draft-ietf-sipcore-rfc4244bis. To that end, we are 
announcing a two-week call for working group adoption at the same time 
as a two-week working group last call. We feel this timing overlap is 
appropriate due to the maturity of the document combined with the fact 
that its text was, at a point in the past, part of an adopted working 
group document.

Interested parties should respond to this message with a clear 
indication of whether they support the adoption of 
draft-barnes-sipcore-rfc4244bis-callflows as a working group document 
under the existing milestone that includes draft-ietf-sipcore-rfc4244bis.

Additionally, any final comments on the contents of the document should 
be provided during this two-week last call period.

This call for adoption and WGLC ends on Friday, July 6th.

The document is available here:
http://tools.ietf.org/html/draft-barnes-sipcore-rfc4244bis-callflows-03

/a

From bruno.chatras@orange.com  Mon Jun 25 04:24:14 2012
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From: <bruno.chatras@orange.com>
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Thread-Topic: [sipcore] Content-Length in multipart body parts
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Cc: "Dale R \(Dale\) Worley" <dworley@avaya.com>, "<sipcore@ietf.org>" <sipcore@ietf.org>
Subject: Re: [sipcore] Content-Length in multipart body parts
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I just noticed that the status of erratum #3167 on RFC 6086 (SIP INFO) was =
changed from "Reported" to "Held for Document Update" rather than "Approved=
/Verified".

I guess that this decision was made based on the following guidelines for e=
rrata processing
http://www.ietf.org/iesg/statement/errata-processing.html

1) Only errors that could cause implementation or deployment problems or si=
gnificant confusion should be Approved.=20
2) Things that are clearly wrong but could not cause an implementation or d=
eployment problem should be Hold for Document Update.

Although the reported error occurs in examples only, I would like to stress=
 that they do cause significant confusion as some vendors have relied on su=
ch examples. I'm aware of practical interoperability issues currently encou=
ntered in some networks due to these examples. Therefore, I don't think the=
 "Held for Document Update" status is appropriate.

The same applies to other errata submitted (or to be submitted) on the RFCs=
 mentioned below, especially Erratum #3183 on RFC3261, although its status =
is still marked as "Reported".

Bruno


> -----Message d'origine-----
> De=A0: sipcore-bounces@ietf.org [mailto:sipcore-bounces@ietf.org] De la p=
art
> de Paul Kyzivat
> Envoy=E9=A0: mardi 3 avril 2012 00:37
> =C0=A0: Hadriel Kaplan
> Cc=A0: Dale R (Dale) Worley; <sipcore@ietf.org>
> Objet=A0: Re: [sipcore] Content-Length in multipart body parts
>=20
> On 4/2/12 6:21 PM, Hadriel Kaplan wrote:
> >
> > Ugh.  Yeah, that's not good for examples to show.
> > So what's the solution?  Errata?
>=20
> Yes, I think the errata process is the right one for this.
>=20
> 	Thanks,
> 	Paul
>=20
> > -hadriel
> > p.s. I like the "Suspicious Line" thing - all RFC lines are
> suspicious! ;)
> >
> >
> > On Apr 2, 2012, at 2:12 PM, Paul Kyzivat wrote:
> >
> >> [reposting with a subject line]
> >>
> >> On 4/2/12 6:53 PM, Worley, Dale R (Dale) wrote:
> >>> Bruno Chatras has pointed out that a number of examples in various
> SIP-related
> >>> RFCs show Content-Length header fields in the headers of body-parts of
> multipart
> >>> entities.  MIME does not define the meaining of such header fields, as
> the MIME
> >>> framing of body parts is done by the boundary markers.
> >>>
> >>> As Dale Moberg has pointed out, these header fields might not be truly
> incorrect
> >>> but merely redundant or "to be ignored".
> >>>
> >>> But given that MIME multipart already frames the body-parts, Content-
> Length
> >>> headers on body-parts are never necessary.
> >>>
> >>> So it seems to me that we should decide on a "best practices" for the
> use of
> >>> Content-Length in the headers of a body part, to clarify the
> ambiguities in the
> >>> specifications, and to state whether it's preferable to include such a
> Content-Length
> >>> or not.
> >>>
> >>> I've appended a list of all the examples carrying such Content-Length
> headers
> >>> that I could find by automated means.
> >>>
> >>> Dale
> >>> ----------------------------------------------------------------------
> ----------------------------------
> >>> RFC 2848
> >>>
> >>>                         The PINT Service Protocol:
> >>>     Extensions to SIP and SDP for IP Access to Telephone Call Services
> >>>
> >>> Suspicious line at rfc2848.txt:2195:       Content-Length: 236
> >>> Suspicious line at rfc2848.txt:2209:       Content-Length:50
> >>> Suspicious line at rfc2848.txt:2268:       Content-Length: 316
> >>> Suspicious line at rfc2848.txt:2284:       Content-Length: 172
> >>> Suspicious line at rfc2848.txt:2372:    Content-Length: 325
> >>> Suspicious line at rfc2848.txt:2387:    Content-Length: 352
> >>>
> >>> Several of these body-part headers are not separated from the
> >>> body-part contents by CR-LF-CR-LF.
> >>>
> >>> RFC 3261
> >>>
> >>>                      SIP: Session Initiation Protocol
> >>>
> >>> Suspicious line at rfc3261.txt:11846:         Content-Length: 231
> >>>
> >>> RFC 3892
> >>>
> >>>        The Session Initiation Protocol (SIP) Referred-By Mechanism
> >>>
> >>> Suspicious line at rfc3892.txt:642:       Content-Length: (appropriate
> value)
> >>> Suspicious line at rfc3892.txt:687:       Content-Length: (appropriate
> value)
> >>> Suspicious line at rfc3892.txt:702:       Content-Length: (appropriate
> value)
> >>> Suspicious line at rfc3892.txt:879:       Content-Length: (appropriate
> value)
> >>> Suspicious line at rfc3892.txt:887:       Content-Length: (appropriate
> value)
> >>> Suspicious line at rfc3892.txt:938:       Content-Length: (appropriate
> value)
> >>> Suspicious line at rfc3892.txt:964:       Content-Length: (appropriate
> value)
> >>> Suspicious line at rfc3892.txt:972:       Content-Length: (appropriate
> value)
> >>> Suspicious line at rfc3892.txt:1056:      Content-Length: (appropriate
> value)
> >>> Suspicious line at rfc3892.txt:1106:      Content-Length: (appropriate
> value)
> >>> Suspicious line at rfc3892.txt:1168:      Content-Length: (appropriate
> value)
> >>> Suspicious line at rfc3892.txt:1196:      Content-Length: (appropriate
> value)
> >>>
> >>> RFC 3893
> >>>
> >>>                     Session Initiation Protocol (SIP)
> >>>                  Authenticated Identity Body (AIB) Format
> >>>
> >>> Suspicious line at rfc3893.txt:249:    Content-Length: 147
> >>> (This has an extra CR-LF before the body-part headers.)
> >>> Suspicious line at rfc3893.txt:263:    Content-Length: 608
> >>>
> >>> RFC 4463
> >>>
> >>>                  A Media Resource Control Protocol (MRCP)
> >>>                Developed by Cisco, Nuance, and Speechworks
> >>>
> >>> Suspicious line at rfc4463.txt:1705:        Content-Length:176
> >>> Suspicious line at rfc4463.txt:1714:        Content-Length:104
> >>> Suspicious line at rfc4463.txt:2977:       Content-Length:176
> >>> (Also missing the CR-LF after the body part headers.)
> >>> Suspicious line at rfc4463.txt:2985:       Content-Length:104
> >>>
> >>> RFC 5547
> >>>
> >>>        A Session Description Protocol (SDP) Offer/Answer Mechanism
> >>>                          to Enable File Transfer
> >>>
> >>> Suspicious line at rfc5547.txt:1645:    Content-Length: [length of SD=
P]
> >>> Suspicious line at rfc5547.txt:1670:    Content-Length: [length of
> image]
> >>> Suspicious line at rfc5547.txt:2093:    Content-Length: [length of SD=
P]
> >>> Suspicious line at rfc5547.txt:2118:    Content-Length: [length of
> image]
> >>>
> >>> RFC 5589
> >>>
> >>>         Session Initiation Protocol (SIP) Call Control - Transfer
> >>>
> >>> Suspicious line at rfc5589.txt:2609:    Content-Length: 2961
> >>> (An extra CR-LF in the middle of the body part headers.)
> >>> Suspicious line at rfc5589.txt:2677:    Content-Length: 156
> >>> (An extra CR-LF in the middle of the body part headers.)
> >>> Suspicious line at rfc5589.txt:2696:    Content-Length: 2961
> >>>
> >>> RFC 6086
> >>>
> >>>    Session Initiation Protocol (SIP) INFO Method and Package Framework
> >>>
> >>> Suspicious line at rfc6086.txt:1594:    Content-length: 59
> >>> Suspicious line at rfc6086.txt:1620:    Content-length: 59
> >>> Suspicious line at rfc6086.txt:1637:    Content-length: 59
> >>> Suspicious line at rfc6086.txt:1664:    Content-length: 59
> >>> _______________________________________________
> >>> sipcore mailing list
> >>> sipcore@ietf.org
> >>> https://www.ietf.org/mailman/listinfo/sipcore
> >>>
> >>
> >> _______________________________________________
> >> sipcore mailing list
> >> sipcore@ietf.org
> >> https://www.ietf.org/mailman/listinfo/sipcore
> >
> >
>=20
> _______________________________________________
> sipcore mailing list
> sipcore@ietf.org
> https://www.ietf.org/mailman/listinfo/sipcore

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From pkyzivat@alum.mit.edu  Mon Jun 25 07:15:23 2012
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Cc: "Dale R \(Dale\) Worley" <dworley@avaya.com>, "<sipcore@ietf.org>" <sipcore@ietf.org>
Subject: Re: [sipcore] Content-Length in multipart body parts
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On 6/25/12 7:24 AM, bruno.chatras@orange.com wrote:
> I just noticed that the status of erratum #3167 on RFC 6086 (SIP INFO) was changed from "Reported" to "Held for Document Update" rather than "Approved/Verified".
>
> I guess that this decision was made based on the following guidelines for errata processing
> http://www.ietf.org/iesg/statement/errata-processing.html
>
> 1) Only errors that could cause implementation or deployment problems or significant confusion should be Approved.
> 2) Things that are clearly wrong but could not cause an implementation or deployment problem should be Hold for Document Update.
>
> Although the reported error occurs in examples only, I would like to stress that they do cause significant confusion as some vendors have relied on such examples. I'm aware of practical interoperability issues currently encountered in some networks due to these examples. Therefore, I don't think the "Held for Document Update" status is appropriate.

How many times do we need to repeat that examples are non-normative?

People who implement to examples rather than the specs almost always run 
into problems. IMO the way this gets fixed is for someone who encounters 
an interop problem due to someone else having implemented to an example 
rather than the spec needs to call this out as an error and request that 
it be fixed. Anybody who argues that their implementation is justified 
because it is compliant with an example won't get support for that position.

The implementers who have this problem most likely won't have looked at 
the errata either. If they do look at the errata, will changing the 
status from "Held" to "Accepted" change their behavior?

	Thanks,
	Paul

> The same applies to other errata submitted (or to be submitted) on the RFCs mentioned below, especially Erratum #3183 on RFC3261, although its status is still marked as "Reported".
>
> Bruno
>
>
>> -----Message d'origine-----
>> De : sipcore-bounces@ietf.org [mailto:sipcore-bounces@ietf.org] De la part
>> de Paul Kyzivat
>> Envoyé : mardi 3 avril 2012 00:37
>> À : Hadriel Kaplan
>> Cc : Dale R (Dale) Worley;<sipcore@ietf.org>
>> Objet : Re: [sipcore] Content-Length in multipart body parts
>>
>> On 4/2/12 6:21 PM, Hadriel Kaplan wrote:
>>>
>>> Ugh.  Yeah, that's not good for examples to show.
>>> So what's the solution?  Errata?
>>
>> Yes, I think the errata process is the right one for this.
>>
>> 	Thanks,
>> 	Paul
>>
>>> -hadriel
>>> p.s. I like the "Suspicious Line" thing - all RFC lines are
>> suspicious! ;)
>>>
>>>
>>> On Apr 2, 2012, at 2:12 PM, Paul Kyzivat wrote:
>>>
>>>> [reposting with a subject line]
>>>>
>>>> On 4/2/12 6:53 PM, Worley, Dale R (Dale) wrote:
>>>>> Bruno Chatras has pointed out that a number of examples in various
>> SIP-related
>>>>> RFCs show Content-Length header fields in the headers of body-parts of
>> multipart
>>>>> entities.  MIME does not define the meaining of such header fields, as
>> the MIME
>>>>> framing of body parts is done by the boundary markers.
>>>>>
>>>>> As Dale Moberg has pointed out, these header fields might not be truly
>> incorrect
>>>>> but merely redundant or "to be ignored".
>>>>>
>>>>> But given that MIME multipart already frames the body-parts, Content-
>> Length
>>>>> headers on body-parts are never necessary.
>>>>>
>>>>> So it seems to me that we should decide on a "best practices" for the
>> use of
>>>>> Content-Length in the headers of a body part, to clarify the
>> ambiguities in the
>>>>> specifications, and to state whether it's preferable to include such a
>> Content-Length
>>>>> or not.
>>>>>
>>>>> I've appended a list of all the examples carrying such Content-Length
>> headers
>>>>> that I could find by automated means.
>>>>>
>>>>> Dale
>>>>> ----------------------------------------------------------------------
>> ----------------------------------
>>>>> RFC 2848
>>>>>
>>>>>                          The PINT Service Protocol:
>>>>>      Extensions to SIP and SDP for IP Access to Telephone Call Services
>>>>>
>>>>> Suspicious line at rfc2848.txt:2195:       Content-Length: 236
>>>>> Suspicious line at rfc2848.txt:2209:       Content-Length:50
>>>>> Suspicious line at rfc2848.txt:2268:       Content-Length: 316
>>>>> Suspicious line at rfc2848.txt:2284:       Content-Length: 172
>>>>> Suspicious line at rfc2848.txt:2372:    Content-Length: 325
>>>>> Suspicious line at rfc2848.txt:2387:    Content-Length: 352
>>>>>
>>>>> Several of these body-part headers are not separated from the
>>>>> body-part contents by CR-LF-CR-LF.
>>>>>
>>>>> RFC 3261
>>>>>
>>>>>                       SIP: Session Initiation Protocol
>>>>>
>>>>> Suspicious line at rfc3261.txt:11846:         Content-Length: 231
>>>>>
>>>>> RFC 3892
>>>>>
>>>>>         The Session Initiation Protocol (SIP) Referred-By Mechanism
>>>>>
>>>>> Suspicious line at rfc3892.txt:642:       Content-Length: (appropriate
>> value)
>>>>> Suspicious line at rfc3892.txt:687:       Content-Length: (appropriate
>> value)
>>>>> Suspicious line at rfc3892.txt:702:       Content-Length: (appropriate
>> value)
>>>>> Suspicious line at rfc3892.txt:879:       Content-Length: (appropriate
>> value)
>>>>> Suspicious line at rfc3892.txt:887:       Content-Length: (appropriate
>> value)
>>>>> Suspicious line at rfc3892.txt:938:       Content-Length: (appropriate
>> value)
>>>>> Suspicious line at rfc3892.txt:964:       Content-Length: (appropriate
>> value)
>>>>> Suspicious line at rfc3892.txt:972:       Content-Length: (appropriate
>> value)
>>>>> Suspicious line at rfc3892.txt:1056:      Content-Length: (appropriate
>> value)
>>>>> Suspicious line at rfc3892.txt:1106:      Content-Length: (appropriate
>> value)
>>>>> Suspicious line at rfc3892.txt:1168:      Content-Length: (appropriate
>> value)
>>>>> Suspicious line at rfc3892.txt:1196:      Content-Length: (appropriate
>> value)
>>>>>
>>>>> RFC 3893
>>>>>
>>>>>                      Session Initiation Protocol (SIP)
>>>>>                   Authenticated Identity Body (AIB) Format
>>>>>
>>>>> Suspicious line at rfc3893.txt:249:    Content-Length: 147
>>>>> (This has an extra CR-LF before the body-part headers.)
>>>>> Suspicious line at rfc3893.txt:263:    Content-Length: 608
>>>>>
>>>>> RFC 4463
>>>>>
>>>>>                   A Media Resource Control Protocol (MRCP)
>>>>>                 Developed by Cisco, Nuance, and Speechworks
>>>>>
>>>>> Suspicious line at rfc4463.txt:1705:        Content-Length:176
>>>>> Suspicious line at rfc4463.txt:1714:        Content-Length:104
>>>>> Suspicious line at rfc4463.txt:2977:       Content-Length:176
>>>>> (Also missing the CR-LF after the body part headers.)
>>>>> Suspicious line at rfc4463.txt:2985:       Content-Length:104
>>>>>
>>>>> RFC 5547
>>>>>
>>>>>         A Session Description Protocol (SDP) Offer/Answer Mechanism
>>>>>                           to Enable File Transfer
>>>>>
>>>>> Suspicious line at rfc5547.txt:1645:    Content-Length: [length of SDP]
>>>>> Suspicious line at rfc5547.txt:1670:    Content-Length: [length of
>> image]
>>>>> Suspicious line at rfc5547.txt:2093:    Content-Length: [length of SDP]
>>>>> Suspicious line at rfc5547.txt:2118:    Content-Length: [length of
>> image]
>>>>>
>>>>> RFC 5589
>>>>>
>>>>>          Session Initiation Protocol (SIP) Call Control - Transfer
>>>>>
>>>>> Suspicious line at rfc5589.txt:2609:    Content-Length: 2961
>>>>> (An extra CR-LF in the middle of the body part headers.)
>>>>> Suspicious line at rfc5589.txt:2677:    Content-Length: 156
>>>>> (An extra CR-LF in the middle of the body part headers.)
>>>>> Suspicious line at rfc5589.txt:2696:    Content-Length: 2961
>>>>>
>>>>> RFC 6086
>>>>>
>>>>>     Session Initiation Protocol (SIP) INFO Method and Package Framework
>>>>>
>>>>> Suspicious line at rfc6086.txt:1594:    Content-length: 59
>>>>> Suspicious line at rfc6086.txt:1620:    Content-length: 59
>>>>> Suspicious line at rfc6086.txt:1637:    Content-length: 59
>>>>> Suspicious line at rfc6086.txt:1664:    Content-length: 59
>>>>> _______________________________________________
>>>>> sipcore mailing list
>>>>> sipcore@ietf.org
>>>>> https://www.ietf.org/mailman/listinfo/sipcore
>>>>>
>>>>
>>>> _______________________________________________
>>>> sipcore mailing list
>>>> sipcore@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/sipcore
>>>
>>>
>>
>> _______________________________________________
>> sipcore mailing list
>> sipcore@ietf.org
>> https://www.ietf.org/mailman/listinfo/sipcore
>
> _________________________________________________________________________________________________________________________
>
> Ce message et ses pieces jointes peuvent contenir des informations confidentielles ou privilegiees et ne doivent donc
> pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu ce message par erreur, veuillez le signaler
> a l'expediteur et le detruire ainsi que les pieces jointes. Les messages electroniques etant susceptibles d'alteration,
> France Telecom - Orange decline toute responsabilite si ce message a ete altere, deforme ou falsifie. Merci.
>
> This message and its attachments may contain confidential or privileged information that may be protected by law;
> they should not be distributed, used or copied without authorisation.
> If you have received this email in error, please notify the sender and delete this message and its attachments.
> As emails may be altered, France Telecom - Orange is not liable for messages that have been modified, changed or falsified.
> Thank you.
>
>


From bruno.chatras@orange.com  Mon Jun 25 07:43:53 2012
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From: <bruno.chatras@orange.com>
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> -----Message d'origine-----
> De=A0: Paul Kyzivat [mailto:pkyzivat@alum.mit.edu]
> Envoy=E9=A0: lundi 25 juin 2012 16:15
> =C0=A0: CHATRAS Bruno RD-CORE
> Cc=A0: Hadriel Kaplan; Dale R (Dale) Worley; <sipcore@ietf.org>
> Objet=A0: Re: [sipcore] Content-Length in multipart body parts
>=20
> On 6/25/12 7:24 AM, bruno.chatras@orange.com wrote:
> > I just noticed that the status of erratum #3167 on RFC 6086 (SIP INFO)
> was changed from "Reported" to "Held for Document Update" rather than
> "Approved/Verified".
> >
> > I guess that this decision was made based on the following guidelines
> for errata processing
> > http://www.ietf.org/iesg/statement/errata-processing.html
> >
> > 1) Only errors that could cause implementation or deployment problems
> or significant confusion should be Approved.
> > 2) Things that are clearly wrong but could not cause an implementation
> or deployment problem should be Hold for Document Update.
> >
> > Although the reported error occurs in examples only, I would like to
> stress that they do cause significant confusion as some vendors have
> relied on such examples. I'm aware of practical interoperability issues
> currently encountered in some networks due to these examples. Therefore,
> I don't think the "Held for Document Update" status is appropriate.
>=20
> How many times do we need to repeat that examples are non-normative?
>=20
> People who implement to examples rather than the specs almost always run
> into problems. IMO the way this gets fixed is for someone who encounters
> an interop problem due to someone else having implemented to an example
> rather than the spec needs to call this out as an error and request that
> it be fixed. Anybody who argues that their implementation is justified
> because it is compliant with an example won't get support for that
> position.
>=20
> The implementers who have this problem most likely won't have looked at
> the errata either.=20
[BC] Their customers can tell them to look at the errata when requesting th=
em to fix the error.

If they do look at the errata, will changing the
> status from "Held" to "Accepted" change their behavior?
[BC] That's what I understood from at least one of them...




>=20
> 	Thanks,
> 	Paul
>=20
> > The same applies to other errata submitted (or to be submitted) on the
> RFCs mentioned below, especially Erratum #3183 on RFC3261, although its
> status is still marked as "Reported".
> >
> > Bruno
> >
> >
> >> -----Message d'origine-----
> >> De : sipcore-bounces@ietf.org [mailto:sipcore-bounces@ietf.org] De la
> part
> >> de Paul Kyzivat
> >> Envoy=E9 : mardi 3 avril 2012 00:37
> >> =C0 : Hadriel Kaplan
> >> Cc : Dale R (Dale) Worley;<sipcore@ietf.org>
> >> Objet : Re: [sipcore] Content-Length in multipart body parts
> >>
> >> On 4/2/12 6:21 PM, Hadriel Kaplan wrote:
> >>>
> >>> Ugh.  Yeah, that's not good for examples to show.
> >>> So what's the solution?  Errata?
> >>
> >> Yes, I think the errata process is the right one for this.
> >>
> >> 	Thanks,
> >> 	Paul
> >>
> >>> -hadriel
> >>> p.s. I like the "Suspicious Line" thing - all RFC lines are
> >> suspicious! ;)
> >>>
> >>>
> >>> On Apr 2, 2012, at 2:12 PM, Paul Kyzivat wrote:
> >>>
> >>>> [reposting with a subject line]
> >>>>
> >>>> On 4/2/12 6:53 PM, Worley, Dale R (Dale) wrote:
> >>>>> Bruno Chatras has pointed out that a number of examples in various
> >> SIP-related
> >>>>> RFCs show Content-Length header fields in the headers of body-
> parts of
> >> multipart
> >>>>> entities.  MIME does not define the meaining of such header fields,
> as
> >> the MIME
> >>>>> framing of body parts is done by the boundary markers.
> >>>>>
> >>>>> As Dale Moberg has pointed out, these header fields might not be
> truly
> >> incorrect
> >>>>> but merely redundant or "to be ignored".
> >>>>>
> >>>>> But given that MIME multipart already frames the body-parts,
> Content-
> >> Length
> >>>>> headers on body-parts are never necessary.
> >>>>>
> >>>>> So it seems to me that we should decide on a "best practices" for
> the
> >> use of
> >>>>> Content-Length in the headers of a body part, to clarify the
> >> ambiguities in the
> >>>>> specifications, and to state whether it's preferable to include
> such a
> >> Content-Length
> >>>>> or not.
> >>>>>
> >>>>> I've appended a list of all the examples carrying such Content-
> Length
> >> headers
> >>>>> that I could find by automated means.
> >>>>>
> >>>>> Dale
> >>>>> ------------------------------------------------------------------
> ----
> >> ----------------------------------
> >>>>> RFC 2848
> >>>>>
> >>>>>                          The PINT Service Protocol:
> >>>>>      Extensions to SIP and SDP for IP Access to Telephone Call
> Services
> >>>>>
> >>>>> Suspicious line at rfc2848.txt:2195:       Content-Length: 236
> >>>>> Suspicious line at rfc2848.txt:2209:       Content-Length:50
> >>>>> Suspicious line at rfc2848.txt:2268:       Content-Length: 316
> >>>>> Suspicious line at rfc2848.txt:2284:       Content-Length: 172
> >>>>> Suspicious line at rfc2848.txt:2372:    Content-Length: 325
> >>>>> Suspicious line at rfc2848.txt:2387:    Content-Length: 352
> >>>>>
> >>>>> Several of these body-part headers are not separated from the
> >>>>> body-part contents by CR-LF-CR-LF.
> >>>>>
> >>>>> RFC 3261
> >>>>>
> >>>>>                       SIP: Session Initiation Protocol
> >>>>>
> >>>>> Suspicious line at rfc3261.txt:11846:         Content-Length: 231
> >>>>>
> >>>>> RFC 3892
> >>>>>
> >>>>>         The Session Initiation Protocol (SIP) Referred-By
> Mechanism
> >>>>>
> >>>>> Suspicious line at rfc3892.txt:642:       Content-Length:
> (appropriate
> >> value)
> >>>>> Suspicious line at rfc3892.txt:687:       Content-Length:
> (appropriate
> >> value)
> >>>>> Suspicious line at rfc3892.txt:702:       Content-Length:
> (appropriate
> >> value)
> >>>>> Suspicious line at rfc3892.txt:879:       Content-Length:
> (appropriate
> >> value)
> >>>>> Suspicious line at rfc3892.txt:887:       Content-Length:
> (appropriate
> >> value)
> >>>>> Suspicious line at rfc3892.txt:938:       Content-Length:
> (appropriate
> >> value)
> >>>>> Suspicious line at rfc3892.txt:964:       Content-Length:
> (appropriate
> >> value)
> >>>>> Suspicious line at rfc3892.txt:972:       Content-Length:
> (appropriate
> >> value)
> >>>>> Suspicious line at rfc3892.txt:1056:      Content-Length:
> (appropriate
> >> value)
> >>>>> Suspicious line at rfc3892.txt:1106:      Content-Length:
> (appropriate
> >> value)
> >>>>> Suspicious line at rfc3892.txt:1168:      Content-Length:
> (appropriate
> >> value)
> >>>>> Suspicious line at rfc3892.txt:1196:      Content-Length:
> (appropriate
> >> value)
> >>>>>
> >>>>> RFC 3893
> >>>>>
> >>>>>                      Session Initiation Protocol (SIP)
> >>>>>                   Authenticated Identity Body (AIB) Format
> >>>>>
> >>>>> Suspicious line at rfc3893.txt:249:    Content-Length: 147
> >>>>> (This has an extra CR-LF before the body-part headers.)
> >>>>> Suspicious line at rfc3893.txt:263:    Content-Length: 608
> >>>>>
> >>>>> RFC 4463
> >>>>>
> >>>>>                   A Media Resource Control Protocol (MRCP)
> >>>>>                 Developed by Cisco, Nuance, and Speechworks
> >>>>>
> >>>>> Suspicious line at rfc4463.txt:1705:        Content-Length:176
> >>>>> Suspicious line at rfc4463.txt:1714:        Content-Length:104
> >>>>> Suspicious line at rfc4463.txt:2977:       Content-Length:176
> >>>>> (Also missing the CR-LF after the body part headers.)
> >>>>> Suspicious line at rfc4463.txt:2985:       Content-Length:104
> >>>>>
> >>>>> RFC 5547
> >>>>>
> >>>>>         A Session Description Protocol (SDP) Offer/Answer
> Mechanism
> >>>>>                           to Enable File Transfer
> >>>>>
> >>>>> Suspicious line at rfc5547.txt:1645:    Content-Length: [length of
> SDP]
> >>>>> Suspicious line at rfc5547.txt:1670:    Content-Length: [length of
> >> image]
> >>>>> Suspicious line at rfc5547.txt:2093:    Content-Length: [length of
> SDP]
> >>>>> Suspicious line at rfc5547.txt:2118:    Content-Length: [length of
> >> image]
> >>>>>
> >>>>> RFC 5589
> >>>>>
> >>>>>          Session Initiation Protocol (SIP) Call Control - Transfer
> >>>>>
> >>>>> Suspicious line at rfc5589.txt:2609:    Content-Length: 2961
> >>>>> (An extra CR-LF in the middle of the body part headers.)
> >>>>> Suspicious line at rfc5589.txt:2677:    Content-Length: 156
> >>>>> (An extra CR-LF in the middle of the body part headers.)
> >>>>> Suspicious line at rfc5589.txt:2696:    Content-Length: 2961
> >>>>>
> >>>>> RFC 6086
> >>>>>
> >>>>>     Session Initiation Protocol (SIP) INFO Method and Package
> Framework
> >>>>>
> >>>>> Suspicious line at rfc6086.txt:1594:    Content-length: 59
> >>>>> Suspicious line at rfc6086.txt:1620:    Content-length: 59
> >>>>> Suspicious line at rfc6086.txt:1637:    Content-length: 59
> >>>>> Suspicious line at rfc6086.txt:1664:    Content-length: 59
> >>>>> _______________________________________________
> >>>>> sipcore mailing list
> >>>>> sipcore@ietf.org
> >>>>> https://www.ietf.org/mailman/listinfo/sipcore
> >>>>>
> >>>>
> >>>> _______________________________________________
> >>>> sipcore mailing list
> >>>> sipcore@ietf.org
> >>>> https://www.ietf.org/mailman/listinfo/sipcore
> >>>
> >>>
> >>
> >> _______________________________________________
> >> sipcore mailing list
> >> sipcore@ietf.org
> >> https://www.ietf.org/mailman/listinfo/sipcore
> >
> >
> ________________________________________________________________________
> _________________________________________________
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Ce message et ses pieces jointes peuvent contenir des informations confiden=
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 ce message par erreur, veuillez le signaler
a l'expediteur et le detruire ainsi que les pieces jointes. Les messages el=
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France Telecom - Orange decline toute responsabilite si ce message a ete al=
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From pkyzivat@alum.mit.edu  Mon Jun 25 08:01:36 2012
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Cc: "Dale R \(Dale\) Worley" <dworley@avaya.com>, "<sipcore@ietf.org>" <sipcore@ietf.org>
Subject: Re: [sipcore] Content-Length in multipart body parts
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On 6/25/12 10:43 AM, bruno.chatras@orange.com wrote:

>> How many times do we need to repeat that examples are non-normative?
>>
>> People who implement to examples rather than the specs almost always run
>> into problems. IMO the way this gets fixed is for someone who encounters
>> an interop problem due to someone else having implemented to an example
>> rather than the spec needs to call this out as an error and request that
>> it be fixed. Anybody who argues that their implementation is justified
>> because it is compliant with an example won't get support for that
>> position.
>>
>> The implementers who have this problem most likely won't have looked at
>> the errata either.
> [BC] Their customers can tell them to look at the errata when requesting them to fix the error.
>
> If they do look at the errata, will changing the
>> status from "Held" to "Accepted" change their behavior?
> [BC] That's what I understood from at least one of them...

IIUC you are saying that the following happened:

- Customer complains to implementer: Your implementation is wrong, and 
is breaking my system because you are using Content-Length in a body 
part. I claim that this is incorrect because according to the MIME specs 
C-L is not a valid header.

- Implementer responds: my use of C-L is valid, because it is shown in 
an example in RFC 6086.

- Customer responds to implementer: examples aren't normative. Please 
cite some normative text that permits C-L here. Also, the use of C-L in 
that example has already been reported to be an error.

- Implementer responds: I still consider the example to be valid because 
the error is still in state "held" rather than "accepted". I don't need 
to cite normative text for my use.

!@#$%^&*(

IMO such an implementer is either new, and needs to be clued in to how 
standards work, or else he is a lost cause. If he is a lost cause, then 
you need a neutral 3rd party to mediate.

	Thanks,
	Paul

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From: "DRAGE, Keith (Keith)" <keith.drage@alcatel-lucent.com>
To: "SIPCORE (Session Initiation Protocol Core) WG" <sipcore@ietf.org>
Date: Tue, 26 Jun 2012 18:41:39 +0200
Thread-Topic: [sipcore] Call for adoption & WGLC: draft-barnes-sipcore-rfc4244bis-callflows
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Subject: Re: [sipcore] Call for adoption & WGLC:	draft-barnes-sipcore-rfc4244bis-callflows
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Out of interest, why wasn't this adopted following the call for adoption on=
 the 7th May on the sipcore list?

Keith

-----Original Message-----
From: sipcore-bounces@ietf.org [mailto:sipcore-bounces@ietf.org] On Behalf =
Of Adam Roach - SIPCORE Chair
Sent: 21 June 2012 19:54
To: SIPCORE (Session Initiation Protocol Core) WG
Subject: [sipcore] Call for adoption & WGLC: draft-barnes-sipcore-rfc4244bi=
s-callflows

[as chair]

SIPCORE Working Group:

As you are probably aware, back in June of 2010, we decided to split the=20
History-Info callflows out of the (already adopted) document=20
draft-ietf-sipcore-rfc4244bis. The callflows document was not formally=20
adopted by the working group, but remains an important informational=20
companion to the base specification.

As part of the publication process, then, we would like to see=20
draft-barnes-sipcore-rfc4244bis-callflows sent to the RFC editor at the=20
same time as draft-ietf-sipcore-rfc4244bis. To that end, we are=20
announcing a two-week call for working group adoption at the same time=20
as a two-week working group last call. We feel this timing overlap is=20
appropriate due to the maturity of the document combined with the fact=20
that its text was, at a point in the past, part of an adopted working=20
group document.

Interested parties should respond to this message with a clear=20
indication of whether they support the adoption of=20
draft-barnes-sipcore-rfc4244bis-callflows as a working group document=20
under the existing milestone that includes draft-ietf-sipcore-rfc4244bis.

Additionally, any final comments on the contents of the document should=20
be provided during this two-week last call period.

This call for adoption and WGLC ends on Friday, July 6th.

The document is available here:
http://tools.ietf.org/html/draft-barnes-sipcore-rfc4244bis-callflows-03

/a
_______________________________________________
sipcore mailing list
sipcore@ietf.org
https://www.ietf.org/mailman/listinfo/sipcore

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Subject: Re: [sipcore] Call for adoption & WGLC:	draft-barnes-sipcore-rfc4244bis-callflows
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On 6/26/12 11:41, Jun 26, DRAGE, Keith (Keith) wrote:
> Out of interest, why wasn't this adopted following the call for adoption on the 7th May on the sipcore list?

There were no responses to the call for adoption in May (unless I've 
missed them). I'm hoping that the proximity to the upcoming meeting will 
have people paying slightly more attention this time around.

/a

From internet-drafts@ietf.org  Wed Jun 27 02:41:52 2012
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Date: Wed, 27 Jun 2012 02:41:43 -0700
Cc: sipcore@ietf.org
Subject: [sipcore] I-D Action: draft-ietf-sipcore-sip-websocket-01.txt
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A New Internet-Draft is available from the on-line Internet-Drafts director=
ies.
 This draft is a work item of the Session Initiation Protocol Core Working =
Group of the IETF.

	Title           : The WebSocket Protocol as a Transport for the Session In=
itiation Protocol (SIP)
	Author(s)       : Inaki Baz Castillo
                          Jose Luis Millan Villegas
                          Victor Pascual
	Filename        : draft-ietf-sipcore-sip-websocket-01.txt
	Pages           : 20
	Date            : 2012-06-27

Abstract:
   The WebSocket protocol enables two-way realtime communication between
   clients and servers.  This document specifies a new WebSocket sub-
   protocol as a reliable transport mechanism between SIP (Session
   Initiation Protocol) entities and enables usage of the SIP protocol
   in new scenarios.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-sipcore-sip-websocket

There's also a htmlized version available at:
http://tools.ietf.org/html/draft-ietf-sipcore-sip-websocket-01

A diff from previous version is available at:
http://tools.ietf.org/rfcdiff?url2=3Ddraft-ietf-sipcore-sip-websocket-01


Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/


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From: =?UTF-8?Q?I=C3=B1aki_Baz_Castillo?= <ibc@aliax.net>
Date: Wed, 27 Jun 2012 11:48:07 +0200
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Subject: Re: [sipcore] I-D Action: draft-ietf-sipcore-sip-websocket-01.txt
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2012/6/27  <internet-drafts@ietf.org>:
>
> A New Internet-Draft is available from the on-line Internet-Drafts direct=
ories.
> =C2=A0This draft is a work item of the Session Initiation Protocol Core W=
orking Group of the IETF.
>
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-ietf-sipcore-sip-websocket
>
> There's also a htmlized version available at:
> http://tools.ietf.org/html/draft-ietf-sipcore-sip-websocket-01


Hi, the changelog from the previous version
draft-ietf-sipcore-sip-websocket-00 is the following:


- Section 5.2.3. "Sending Responses" (within section 5.2. "Updates to
RFC 3261") has been removed. As Salvatore Loreto pointed out, the
existing text "is tautological saying that a WebSocket Client can act
only as a client, however in theory a UA (outside a Browser sandbox)
could act as both a WebSocket client and WebSocket server".
  http://www.ietf.org/mail-archive/web/sipcore/current/msg04940.html

- Example 1 includes the WebSocket handshake flow and some typos have
been fixed (thanks to Nataraju A. B.).
  http://www.ietf.org/mail-archive/web/sipcore/current/msg04768.html


As always your comments are welcome.
Thanks a lot.

--=20
I=C3=B1aki Baz Castillo
<ibc@aliax.net>
