[asterisk-users] g729 codec over SIP Trunk between CCM and Asterisk

[Onur Cem Çelebi]

Thanks for reply Leandro.

We have installed g279 codec in Asterisk box.Even if not so, there is no
problem outgoing (from Asterisk to CCM) calls. But after i searched  the
issue, i figured out that CCM 4.x does not let g729 codec to pass through
over SIP trunk. This is limited only in CCM. If we changed codec g729 into
g711u (ulaw) then communication over SIP trunk go on perfectly.

Because of CCM does not inject any packets encoded g729 over SIP trunk, i
am not able to debug it. But i have tried that i am able to force my SIP
phone suscribed Asterisk box to use g729 codec and get work successfully.

2013/1/17 Leandro Dardini <ldardini at gmail.com>

> 2013/1/17 Onur Cem Çelebi <occelebi at gmail.com>
>
>> Hello,
>>
>> My problem is, outgoing calls (from asterisk to CCM) work fine but
>> incoming (from CCM to Asterisk) does not work because of CCM is trying to
>> use g729 over SIP trunk. I have found that link after a quick search.
>> Problem is the same as in link below (However my Asterisk version is
>> 1.8.13) and solution seems to have H323 trunk between CCM and Asterisk for
>> using g729 codec. The post was written in 2006. Is there any better
>> solution since that time ? Thanks for reading.
>>
>> link : g279 codec over SIP Trunk between CCM and Asterisk<https://supportforums.cisco.com/message/1072037>
>>
>>
>>
> Have you checked if the problem is the license? Asterisk doesn't have a
> free encoder/decoder for g729, only pass through is available. Try to debug
> the SIP call to see if the capabilities don't match or just buy a $10
> license from Digium (1 concurrent call).
>
> Leandro
>
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