Re: [Dart] draft-dart-dscp-rtp - way forward

"Black, David" <david.black@emc.com> Thu, 28 August 2014 20:29 UTC

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From: "Black, David" <david.black@emc.com>
To: Colin Perkins <csp@csperkins.org>, Ben Campbell <ben@nostrum.com>
Date: Thu, 28 Aug 2014 16:29:07 -0400
Thread-Topic: [Dart] draft-dart-dscp-rtp - way forward
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Subject: Re: [Dart] draft-dart-dscp-rtp - way forward
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I'll go add a sentence to explain that to the draft 5.4 text ...

Thanks,
--David


> -----Original Message-----
> From: Colin Perkins [mailto:csp@csperkins.org]
> Sent: Thursday, August 28, 2014 4:27 PM
> To: Ben Campbell
> Cc: Black, David; dart@ietf.org
> Subject: Re: [Dart] draft-dart-dscp-rtp - way forward
> 
> On 28 Aug 2014, at 20:48, Ben Campbell <ben@nostrum.com>; wrote:
> > On Aug 28, 2014, at 2:41 PM, Black, David <david.black@emc.com>; wrote:
> >>>> The distinction between RTCP SR and RR isn't useful here. What you want
> to say is that an SSRC needs to use the same marking for the RTCP packets it
> sends as it uses for the RTP packets it sends. If it doesn't send any RTP
> packets, it marks its RTCP packets with the marking it would use if it did
> send RTP.
> >>>
> >>> That last bit concerns me a bit. Are we really asking an implementation to
> figure out how it would have done something it isn't going to do?
> >>
> >> Yes, --David
> >
> > Maybe I'm not connecting the dots correctly, but what kind of media is it
> going to not send? Are we assuming the same as what it receives?
> 
> Yes, that's how RTP works.
> 
> --
> Colin Perkins
> http://csperkins.org/
> 
>