Subject: RE: [SIP] Session Timer Question

From: "Jonathan Rosenberg" <[email-masked]>
Date: Mon, 2 Oct 2000 02:35:59 -0400

> -----Original Message-----
> From: Bodgey [mailto:[email-masked]]
> Sent: Wednesday, September 27, 2000 1:02 AM
> To: Jonathan Rosenberg
> Cc: [email-masked]; [email-masked]
> Subject: RE: [SIP] Session Timer Question
> 
> > > The question is: does the UAS need to insert the
> > > Session-Expires header
> > > in the response? The UAC may even not be able to understand
> > > it (even if
> > > it does, there is nothing it can do with it since it doesn't
> > > support the
> > > session timer in the first place) and the UAS will do the 
> refreshes in
> > > either case.
> >
> > Yes, its needed for the benefit of proxies along the path who may be
> > interested in the information.
> >
> > -Jonathan R.
> 
> When using the extension, we need use the "supported" header 
> to consult
> between the UAS and UAC before either UAS or UAC adds some 
> extensions. So we
> ought to define Option-tag to support the extension or a type 
> of extension
> that is clasified from the many extensions.

From page 1:

 Protocol Overview

   UACs which support the session timer extension defined here include a
   Supported header in all requests, excepting ACK, containing the
   option tag "timer" [4]. 

-Jonathan R.
---
Jonathan D. Rosenberg                       72 Eagle Rock Ave.
Chief Scientist                             First Floor
dynamicsoft                                 East Hanover, NJ 07936
[email-masked]                     FAX:   (973) 952-5050
http://www.cs.columbia.edu/~jdrosen         PHONE: (973) 952-5000
http://www.dynamicsoft.com

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