Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

CCM5.1 & SIP trunk termination

Need some design help. Is it feasible to termintate a carrier provided SIP trunk using G.729 to CCM5.1 server; setup regions for numbers/devices requiring G.711 and using MTP and XCODE resources on 2821 router. The majority of the handsets will run SCCP and can use G.729.

New Member

Re: CCM5.1 & SIP trunk termination

I think the easiest way to do this would be to use the router you terminate the SIP trunk on as an IP to IP gateway. SIP on one side and H.323 on the other.

You could probably get the Telco to use G.729 instead of G.711 for a codec and eliminate the need for the XCODE.

you should be able to use the 2821 for transcoding,

The Gateway you set up for connecting to the 2821 can be in its own device pool/Region. as long as you are using an XCODE media resource from the 2821 for the region the router will be used for the codec transcoding.

Good Luck.