Phil,
I agree the messaging after 200 ok is incorrect but the main question is with
the CRBT which is sent before 200 ok. Why do u think that the client would not
get early media if the sdp in INV is correct ?
Rgrda
Mustafa
From: sip-implementors-boun...@lists.cs.columbia.edu
[sip-implementors-boun...@lists.cs.columbia.edu] On Behalf Of Paul Kyzivat
[pkyzi...@alum.mit.edu]
Sent: Wednesday, October 15, 2014 5:47 PM
To: sip-implementors@lists.cs.columbia.edu
Subject: Re: [Sip-implementors] can CRBT palyed without Reliable Provisonal
response.
On 10/15/14 10:22 AM, Sourav Dhar Chaudhuri 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?
This is not correct, and wouldn't be correct even if the 180 was reliable.
See RFC6337.
Thanks,
Paul
> Regards
>
> Sourav Dhar Chaudhuri
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