Sourav, Sorry I thought Inv is sent without sdp. I believe the UAC should be able to get CRBT in your call scenario.
Rgrds Mustafa From: Mustafa AYDIN Sent: Wednesday, October 15, 2014 5:41 PM To: VARUN BHATIA; Sourav Dhar Chaudhuri Cc: sip-implementors@lists.cs.columbia.edu Subject: RE: [Sip-implementors] can CRBT palyed without Reliable Provisonal response. Hi Sourav, The client would not get CRBT unless there is reliable prov response, because the server would not know where to send early media rtp packets. If there was a prack mechanism then the sdp of the client would be sent in prack message and early media scenario would be successful. Thnks. Mustafa ________________________________________ From: sip-implementors-boun...@lists.cs.columbia.edu [sip-implementors-boun...@lists.cs.columbia.edu] On Behalf Of VARUN BHATIA [varuninbha...@gmail.com] Sent: Wednesday, October 15, 2014 5:27 PM To: Sourav Dhar Chaudhuri Cc: sip-implement...@lists.cs.columbia.eduIf Subject: Re: [Sip-implementors] can CRBT palyed without Reliable Provisonal response. Hi Sourav, You cannot send an offer unless you receive an acknowledgement corresponding to your answer therefore you can send SDP in 200 OK but it will be treated as an answer only. Normally clients honor both the answers but standards say it should honor first answer if I am not missing anything. Thanks, Varun On Wed, Oct 15, 2014 at 7:52 PM, Sourav Dhar Chaudhuri <sourav_mi...@yahoo.co.in> wrote: > Hi, > Can CRBT works without using Reliable Provisional Response ? > > > > A ================ INVITE (with SDP offer) ========================> B > > A <=============== 180 ringing (with SDP answer ) ==================== B > ----------------------> It is not a RPR > > CRBT Played > > A <=============== 200 OK for INVITE ( new SDP offer) =============== > B > > A ================= ACK (new SDP answer) =======================> B > > > Whether the above diagram is a correct call flow for CRBT without using > Reliable Provisional response? > > Regards > > Sourav Dhar Chaudhuri > _______________________________________________ > Sip-implementors mailing list > Sip-implementors@lists.cs.columbia.edu > https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors -- Regards, Varun Bhatia _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
