Re: [AVT] RTP No-Op and AVP Feedback

[Colin Perkins <csp at csperkins.org>]

Dan,

On 14 Oct 2005, at 17:11, Dan Wing wrote:
...
> >  o  For unicast sessions, the reduced value MAY be used by
> >     participants that are not active data senders as well,
> >     and the delay before sending the initial compound RTCP
> >     packet MAY be zero.
>
> the authors consider it appropriate for RTP No-Op's "Request Early
> RTCP" bit to allow unicast sessions which support RTP No-Op in offer /
> answer to send RTCP reports immediately upon receipt of a No-Op packet
> with the "Request Early RTCP" bit set.  We need to adhere to section
> 6.2 of RFC3550 and the rules of whatever profile we're using, but we'd
> like to remove the requirement that No-Op can only use AVPF.
>
> Any comments on this direction?

You need to be careful to avoid implosion, in case the session has  
many members. This can occur even if you have a unicast connection,  
since you might be talking to an RTP translator, so something like  
the AVPF timing rules is needed.

Colin

_______________________________________________
Audio/Video Transport Working Group
avt at ietf.org
https://www1.ietf.org/mailman/listinfo/avt