RE: [AVT] I-D ACTION:draft-ietf-avt-rtp-speex-01.txt

["SOLLAUD Aurelien RD-TECH-LAN" <aurelien.sollaud at orange-ftgroup.com>]

> > Marker bit "to indicate that the RTP packet contains at least one 
> > complete frame" is unusual for audio (although typical for 
> video). It 
> > would be better used to indicate first packet after a 
> silent period, 
> > as is usual for audio codecs.
> 
> Right that is confusing.
> 
> Marker (M) bit: The M bit is set to one on the first packet 
> received after a silent period.

Hi

I'd rather say:

   The M bit is set to one on the first packet _sent_ after a silent period 

because the M bit is set by the sender

In addition, you should precise
-> a silence period during which packets have not been transmitted contiguously


See RFC 3551 §4.1
   For applications which send either no packets or occasional comfort-
   noise packets during silence, the first packet of a talkspurt, that
   is, the first packet after a silence period during which packets have
   not been transmitted contiguously, SHOULD be distinguished by setting
   the marker bit in the RTP data header to one.  The marker bit in all
   other packets is zero.  The beginning of a talkspurt MAY be used to
   adjust the playout delay to reflect changing network delays.
   Applications without silence suppression MUST set the marker bit to
   zero.


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