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Community Member

SIP integration Problems

I have a CUCM 4.1 that I need to integrate with a VoiceBlue (SIP Trunk), but I'm having problems when it tries to call to a different region. All the calls with the regions that use G711 function normaly, but when I try to make a call to a region with G729 the call is dropped.

Does any one have an idea of how I can make this function?

2 REPLIES
Community Member

Re: SIP integration Problems

What are you using as a transcoder? You need to have a transcoder available in the media resource list in order to transcode from 711 to 729

Community Member

Re: SIP integration Problems

u need to allow g.711 for MTP in your SIP trunk as CM 5.0 and below doesn't support G.729 for "INVITE with SDP".

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