[Sipping] FW: draft-ietf-sipping-service-examples-15: 181 text
"Brett Tate" <brett@broadsoft.com> Tue, 09 September 2008 14:34 UTC
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Thread-Topic: draft-ietf-sipping-service-examples-15: 181 text
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From: Brett Tate <brett@broadsoft.com>
To: sipping LIST <sipping@ietf.org>
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Subject: [Sipping] FW: draft-ietf-sipping-service-examples-15: 181 text
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Resending since not archived or distributed... -----Original Message----- From: Alan Johnston [mailto:alan@sipstation.com] Sent: Friday, September 05, 2008 11:30 AM To: Brett Tate Cc: sipping LIST Subject: Re: draft-ietf-sipping-service-examples-15: 181 text Brett, Thanks for your comments. The text is out of date - we'll update it to match the call flows. Thanks, Alan Brett Tate wrote: > Greetings, > > The following draft-ietf-sipping-service-examples-15 section 2.7 text > should likely be modified or removed: > > "Note that the 181 Call is Being Forwarded response does not have a To > tag added as the proxy does not wish to establish an early dialog with > Alice. Strictly speaking, the proxy is behaving as a User Agent in > this case as a proxy can not generate non-100 provisional responses." > > The example does show a To tag being added. Additionally RFC 3261 > does not advocate sending INVITE 101-199 responses without To tags > because of the forking ambiguities. In my opinion, this BCP also > should not advocate sending such responses. RFC 3261 sections > 8.2.6.2, 12.1.2, and > 13.3.1.1 appear to require sending non 100 provisional responses with > To tags. Section 12.1.2 does allow receiving such responses for > backwards compatibility reasons; and depending upon interpretation, > such responses may even create an early dialog with tag value of null. > > -brett > > > _______________________________________________ Sipping mailing list https://www.ietf.org/mailman/listinfo/sipping This list is for NEW development of the application of SIP Use sip-implementors@cs.columbia.edu for questions on current sip Use sip@ietf.org for new developments of core SIP