Subject: [AVT] Question on draft-perkins-avt-rapid-rtp-sync-00

From: Eilon Yardeni <[email-masked]>
Date: Wed, 10 Dec 2008 16:05:09 -0500

The draft defines a new RTCP feedback message type RTCP-SR-REQ that allows receivers
to request RTCP SR from the media source in order to synchronize the streams.

This would allow receivers to send RTCP-SR-REQ as soon as they join for fast
synchronization; however, section 4 in the draft says that "receivers using unicast
feedback would not be allowed to send immediate RTCP.".
If SSM is used, receivers must use unicast feedback (i.e. draft-ietf-avt-rtcpssm-17)
for sending RTCP, so how will they be able to send a fast RTCP-SR-REQ?

Thanks,
Eilon
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