RE: [AVT] T.38 over RTP: RTP Sequence Number

Also 2833, but still redundancy was managed within the profile. The T.38
draft may be extended to use a special mode of the RFC 2198, same as
done at 2833.

-----Original Message-----
From: Colin Perkins [mailto:csp@csperkins.org] 
Sent: Wednesday, July 20, 2005 10:20 PM
To: Oren Peleg
Cc: Paul E. Jones; Vladimir Ulybin; Magnus Westerlund; avt@ietf.org
Subject: Re: [AVT] T.38 over RTP: RTP Sequence Number

On 20 Jul 2005, at 20:16, Oren Peleg wrote:
> I would like to suggest the following:
>
> Since Timestamp is profile specific, the T.38 RTP profile draft
> (currently draft-jones-avt-audio-t38-05.txt) will add a special  
> case of
> Timestamp manipulation which will be used for redundant control packet
> transmission (similar to the End packet of the RFC 2833 event). At  
> this
> special case the timestamp that will be used at the redundant packets
> will be the same as the timestamp of the original packet. The  
> number of
> redundant packets will be determined via SDP using a special  
> parameter.

This is incompatible with all other uses of RFC 2198, and contrary to  
the RTP timing model.

Colin

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