Subject: Re: [siprec] What does Start / Stop time attributes signifyforMediaStream block ? [ was RE: Comment on metadata-02 -MediaStream ]

From: [email-masked]
Date: Tue, 26 Jul 2011 18:53:23 +0000

We definitely should provide solution that will not rely completely on CSRC in the original CS session. Even may be used just labels RS SDP if no CSRC available

Leon
------Original Message------
From: Hadriel Kaplan
To: Ram Mohan R (rmohanr)
Cc: Charles Eckel (eckelcu)
Cc: Parthasarathi R (partr)
Cc: Leon gmail
Cc: [email-masked]
Subject: Re: [siprec] What does Start / Stop time attributes signifyforMediaStream block ? [ was RE: Comment on metadata-02 -MediaStream ]
Sent: Jul 26, 2011 2:50 PM

On Jul 26, 2011, at 2:34 PM, Ram Mohan R (rmohanr) wrote:

> There was no objection on using CSRC in SDP.  What we need is a way to
> link the participant to the CSRC used for that participant.

I must be missing something very basic.  How would an SRC know what the SSRC (and thus the CSRC) is going to be for RTP streams from the UA's of the CS, when it sends the initial RS INVITE with SDP to the SRS?  I mean there is technically an SDP attribute to indicate it if both UA's do that, but it's not exactly widely popular.

-hadriel

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