[Asterisk-Users] MOH and VAD

Juan J. Sierralta P. juanjo at atmlab.utfsm.cl
Fri Oct 17 11:39:21 MST 2003


On Fri, 2003-10-17 at 08:06, Mark Spencer wrote:

> In order to keep the timing clean, Asterisk transmits precisely the same
> number of bytes of audio when running a sound generator (MOH, GenTones,
> etc), thus synchronizing the production of sound to the clock on the
> remote system.  If we generate the audio ourselves independently of the
> far end (e.g. off a zap timer) then there will be slips relative to the
> far end.  It would certainly be possible to add such a feature, but I'm
> not sure it's a good idea.

	BTW. Running Ethereal against my * server noted that my Cisco AS5300 is
using RTP payload type 19 instead of 13 as Confort Noise. It seems 19
was used on early CN drafts.
	http://www.zvon.org/tmRFC/RFC3551/Output/chapter6.html

-- 
Juanjo sin .sig




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