[Asterisk-Users] C7960 g729 question

[Rich Adamson]

My sip.conf for this "single" extension, looks like:
 [3014]                                     
 username=3014
 ...snip...
 canreinvite=no
 disallow=all
 allow=g729
 ...snip...
which works fine, and does force the use of g729 as wanted. That's not
the issue here. 

The issue is: once a call is established, it appears the g729 -> g711
transcoding seems to be choppy while g711 -> g711 is much better. In
a somewhat limited bandwidth situation, I would have expected the other
way around; g711 should have been worse then g729 transcoding. That
implies a trancoding issue might be lurking.

Thoughts?

------------------------
> What does your sip.conf look like? Always make sure that you have the 
> following codec order for G.729 pass-thru:
> 
> [general]
> disallow=all
> allow=g729
> allow=ulaw
> allow=alaw
> 
> you don't need to force your C7960 (SIP settings) to use G.729 with the 
> above config.
> 
> see also:
> http://www.voip-info.org/tiki-index.php?page=Asterisk%20G.729%20pass-thru
> 
> Dominique
> 
> Rich Adamson wrote:
> 
> > I have multiple voiceage g729 licenses installed on a RH9 box, and have
> > a remote C7960 configured to use it (low bandwidth). In calls like:
> > 
> >   Remote C7960 -> g729 -> asterisk -> g711 -> C7960
> > 
> > the audio is oftentimes rather choppy. Changing the remote 7960 to use
> > g711 seems to eliminate/reduce the choppyness. Any ideas on what might
> > be behind this?
> > 
> > 
> > 
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> 
> -- 
> Dominique Kull
> The Old Lodge, London SW6 6EE UK
> t: +44 207 731 1562
> v: fwd 268167
> e: dominique at kull.net
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