RE: [Sip] Re-use of Call-ID in the SIP Replaces header
Jonathan Rosenberg <jdrosen@dynamicsoft.com> Wed, 01 August 2001 06:42 UTC
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From: Jonathan Rosenberg <jdrosen@dynamicsoft.com>
To: 'Billy Biggs' <billy@billybiggs.com>, Jonathan Cumming <jrc@dataconnection.com>
Cc: SIP List <sip@ietf.org>
Subject: RE: [Sip] Re-use of Call-ID in the SIP Replaces header
Date: Wed, 01 Aug 2001 02:14:36 -0400
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> -----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] 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