[asterisk-users] One way audio internal

A J Stiles asterisk_list at earthshod.co.uk
Fri Nov 21 04:47:07 CST 2014

On Friday 21 Nov 2014, Andrew Colin wrote:
> Hi All
> We have a strange issue with our hosted asterisk server running on Debian
> Internal calls btween extensions using g729 give one way audio
> As soon as we change the codec to ALAW the issues goes away.
> Any ideas how to fix this?
> Outbound calls via a trunk work fine with g729

Unless you have serious bandwidth issues, just forget about g.729 and change 
to a-law throughout.  A-law is what the PSTN  (in civilised countries)  uses 
anyway, so you won't need to transcode  (which chews up processor resources 
and risks compromising quality)  for calls to and from the outside world.  

If you really need to use g.729 and are outside the USA  (therefore, beyond 
the reach of software patents),  there is a free version that you can use -- 
and this one, better than Digium's offering, comes with the Source Code so you 
can be sure it isn't doing anything nasty behind the scenes.

But to be honest, you probably are better off just sticking with a-law.


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