[asterisk-users] G729 Pass through

Dovey Forman dovey.forman at idt.net
Mon Dec 14 10:47:27 CST 2009


The SDP response is the IP of the Trixbox server.

On Fri, Dec 11, 2009 at 1:38 PM, Christian Victor
<christian at victormedia.de>wrote:

> Hi!
>
> Are you sure you are getting Astrisk out of the media path? I guess
> reinvite must be allowed. Then it should work without transcoding
> licenses.
>
> Maybe you should take a look at the SIP DEBUG info to see what codec
> Asterisk is trying to negotiate with the trunk. You could disallow
> alaw and ulaw for a test.
>
> Christian
>
> 2009/12/11 Dovey Forman <dovey.forman at idt.net>:
> > Hi;
> >
> >
> >
> > I am running Asterisk (Trix) 1.2.17 with Aastra 6731i phones as my
> > endpoints.
> >
> >
> >
> > It seems that when I enable G729 on my peers in sip.conf and make a call
> I
> > am getting the following errors:
> >
> >
> >
> > Called crp_uk/806575011971553141421
> >
> > Dec 11 07:57:10 WARNING[31903] channel.c: Unable to find a codec
> translation
> > path from g729 to ulaw
> >
> > Dec 11 07:57:10 WARNING[20633] chan_sip.c: Asked to transmit frame type
> 256,
> > while native formats is 4 (read/write = 4/4)
> >
> >
> >
> > Both my end points (Aastra phone) and my sip carrier support G729, so
> this
> > should be simple pass-through.
> >
> >
> >
> > Snippet of my peer crp_uk:
> >
> >
> >
> > [crp_uk]
> >
> > disallow=all
> >
> > allow=ulaw
> >
> > allow=alaw
> >
> > allow=g729
> >
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