Hi All,

I am troubling shooting an issue with Counterpath and need someone
more familiar with SIP to weigh in.  I have a call from Bria 3.1.2
that goes to a user that has both a polycom and has sim-ringed their
cell phone through an Audiocodes gateway.  The initial session
description seems to be negotiated in the 183 session progress as
G.711U.  Then when the user picks up their polycom, sipx sends a 200
OK that renegotiates the session to G.722 (this is actually through an
Ingates SIParator, but I think that is transparent when it comes to
the SDP).  The problem lies in that Bria is ignoring the SDP in the
200 OK.  The Counterpath tech support says that session re-negotiation
should be in a Re-Invite.

I'm looking at section 14.1 of rfc 3261 and it *seems* to me that a
200 OK is a valid way to renegotiate codecs. Attached are the 183 and
the 200 I can add more if someone needs it.

Thanks!

Kyle

Attachment: Bria_Session.cap
Description: Binary data

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