Re: [Sip] Re-use of Call-ID in the SIP Replaces header
"Daniel G. Petrie" <dpetrie@pingtel.com> Thu, 01 November 2001 19:38 UTC
Received: from optimus.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id OAA28522 for <sip-archive@odin.ietf.org>; Thu, 1 Nov 2001 14:38:49 -0500 (EST)
Received: (from daemon@localhost) by optimus.ietf.org (8.9.1a/8.9.1) id OAA14274 for sip-archive@odin.ietf.org; Thu, 1 Nov 2001 14:38:55 -0500 (EST)
Received: from optimus.ietf.org (localhost [127.0.0.1]) by optimus.ietf.org (8.9.1a/8.9.1) with ESMTP id OAA13653; Thu, 1 Nov 2001 14:22:22 -0500 (EST)
Received: from ietf.org (odin [132.151.1.176]) by optimus.ietf.org (8.9.1a/8.9.1) with ESMTP id OAA13623 for <sip@optimus.ietf.org>; Thu, 1 Nov 2001 14:22:19 -0500 (EST)
Received: from mail.pingtel.com (IDENT:root@mail.pingtel.com [216.91.1.131]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id OAA28184 for <sip@ietf.org>; Thu, 1 Nov 2001 14:22:12 -0500 (EST)
Received: from pingtel.com (cdhcp141.pingtel.com [10.1.1.141]) by mail.pingtel.com (8.11.0/8.11.0) with ESMTP id fA1JPn625330; Thu, 1 Nov 2001 14:25:49 -0500
Message-ID: <3BE19FB7.B0308730@pingtel.com>
Date: Thu, 01 Nov 2001 14:17:12 -0500
From: "Daniel G. Petrie" <dpetrie@pingtel.com>
Organization: Pingtel Corp. http://www.pingtel.com
X-Mailer: Mozilla 4.73 [en]C-{C-UDP; EBM-SONY1} (Windows NT 5.0; U)
X-Accept-Language: en
MIME-Version: 1.0
To: Jonathan Rosenberg <jdrosen@dynamicsoft.com>
CC: 'Billy Biggs' <billy@billybiggs.com>, Jonathan Cumming <jrc@dataconnection.com>, SIP List <sip@ietf.org>
Subject: Re: [Sip] Re-use of Call-ID in the SIP Replaces header
References: <B65B4F8437968F488A01A940B21982BF020D6419@DYN-EXCH-001.dynamicsoft.com>
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Content-Transfer-Encoding: 7bit
Sender: sip-admin@ietf.org
Errors-To: sip-admin@ietf.org
X-Mailman-Version: 1.0
Precedence: bulk
List-Id: Session Initiation Protocol <sip.ietf.org>
X-BeenThere: sip@ietf.org
Content-Transfer-Encoding: 7bit
Sorry, this thread is perhaps a little stale. We had rough concensus at the Feb. Interim SIP WG meeting that though there was no implied symatics, it was ok for a UA to reuse a Call-Id (e.g. on a conference bridge). http://www.softarmor.com/sipwg/meets/interim-feb-01/notes/dwillis.html Did I miss some discussion which changed this decision? The change to make UAs MUST use a unique ID will impact existing implementations. Jonathan Rosenberg wrote: > > > > -----Original Message----- > > From: Billy Biggs [mailto:billy@billybiggs.com] > > Sent: Tuesday, July 31, 2001 10:36 AM > > To: Jonathan Cumming > > Cc: SIP List > > Subject: Re: [Sip] Re-use of Call-ID in the SIP Replaces header > > > > > > Jonathan Cumming (jrc@dataconnection.com): > > > > > In section 2.2 of draft-biggs-sip-replaces-01, you specify that "A > > > unique call-id may be given to the replacement call.". This seems > > > unnecessarily weak and could lead to interoperability problems where > > > an application assumes the re-use of the Call-ID. > > > > > > If a unique Call-ID is required, as specified in RFC 2543, then why > > > give the end-point the option to re-use the existing Call-ID? > > > > When we were first discussing methods of performing attended call > > transfer, there was alot of discussion about using the Call-ID to > > perform the replaces operation, that is, the replacement call (or > > joining call) would be identified by having the same Call-ID as an > > existing call. > > > > So, the text should really read "in our replaces model, a unique > > call-id may be given to the replacement call, instead of > > previous models > > which overloaded the meaning of the call-id". I wasn't trying to > > dictate behavior either way. > > "may" is not strong enough. I think the consensus was to continue to have > call-ids be unique, in which case the replacement call MUST use a new > call-id. > > -Jonathan R. > --- > Jonathan D. Rosenberg, Ph.D. 72 Eagle Rock Ave. > Chief Scientist First Floor > dynamicsoft East Hanover, NJ 07936 > jdrosen@dynamicsoft.com FAX: (973) 952-5050 > http://www.jdrosen.net PHONE: (973) 952-5000 > http://www.dynamicsoft.com > > _______________________________________________ > Sip mailing list http://www.ietf.org/mailman/listinfo/sip > This list is for NEW development of the core SIP Protocol > Use sip-implementors@cs.columbia.edu for questions on current sip > Use sipping@ietf.org for new developments on the application of sip _______________________________________________ Sip mailing list http://www1.ietf.org/mailman/listinfo/sip This list is for NEW development of the core SIP Protocol Use sip-implementors@cs.columbia.edu for questions on current sip Use sipping@ietf.org for new developments on the application of sip
- [Sip] Re-use of Call-ID in the SIP Replaces header Jonathan Cumming
- Re: [Sip] Re-use of Call-ID in the SIP Replaces h… Billy Biggs
- RE: [Sip] Re-use of Call-ID in the SIP Replaces h… Jonathan Rosenberg
- Re: [Sip] Re-use of Call-ID in the SIP Replaces h… Daniel G. Petrie
- RE: [Sip] Re-use of Call-ID in the SIP Replaces h… Jonathan Rosenberg