[cisco-voip] CCM 4.1(3) SIP Trunk + Codec

[Paul Choi]

I believe this would largely depend on your SIP
service provider. For example, if you ask Broadvoice,
the residential SIP provider, if they support G.729
they will immediately say no. Supporting transcoding
on a large scale requires a lot of DSP resources so I
can see why smaller outfits would refuse to support
anything else but G.711.

Paul


--- tusker keg <tuskerkeg at gmail.com> wrote:

> Hellos
> 
> I am trying to configure a sip trunk between a
> callmanager and OpenSer
> SIP Server.
> 
> I am able to send calls through successfully with
> G711a/ulaw codec (
> these are the only  2 options  under sip trunks 
> configuration page) .
> 
> When I put the SIP server in a different region  and
> change the audio
> codec for communicating
> with the region with callmanager , the calls fails.,
> 
> Are other codecs supported in sip trunks,
> Any workarounds?
> 
> Regards
> 
> ./Tusker
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> 



 
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