G726 and ccm

Unanswered Question
Jul 11th, 2007

Can Cisco call manager support g726 call from PBX to ip phones?Assuming there are hardware transcoders. I do not see g726 available in the region setting.

I have this problem too.
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gogasca Wed, 07/11/2007 - 14:31

Unfortunetaly, callmanager application does not have the option to choose g726 codec as you already know. But if you exactly tell me the application you are using to integrate with callmanager and what the network topology you have i might figure a possible workaround for you.

ciscoforum Thu, 07/12/2007 - 12:20

Currently customer has the following scenario:


G726 is the codec in the IP cloud. Now CCM will be brought into the scenario and IP Phone needs talk to PBX phones.

Since CCM does not support G726 there will be a problem between the IP phones to PBX phone, right?

gogasca Sun, 07/15/2007 - 19:11

Correct, you may put another device in the middle. That do the transcoding inside the box like any Linux PBX (*).

ciscoforum Mon, 07/16/2007 - 07:51

I have another solution now:

add a 2nd codec prefernece G729 on the gw dial peer so that it can use this codec prefrerence to establish call with CCM which has G729 for IP Phones. Is this good?


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