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

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

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

PBX Integration

I am having a scenario, just would like to know the possible solution.

I have 2 sites, each site having PBX which having a Q.SIG PRI connection to 2651XM router. PBX send G711 to 2651XM gateway. Is that possible for gateway to transcode G711 to G729 and send the call via WAN link to another site? If yes, what is the solution? If not, any alternative solution?

thank you

  • Video Over IP
1 ACCEPTED SOLUTION

Accepted Solutions
New Member

Re: PBX Integration

Yes, CallManager does transcoding, and one can specify the codec to use between regions, but I think in the scenerio described here, the PRI between the router and the PBX is treated like a connection to the PSTN (from the router's perspective). The only "IP-leg" of the call is between the two routers.

4 REPLIES
New Member

Re: PBX Integration

It sounds like you have a "line-side" PRI between your PBX and router. Are the 2651's setup as H.323 gateways? If yes, you can set the codec when you define the dial-peers.

New Member

Re: PBX Integration

Totally agree!

you should configure the codec in the dial-peer that points to the remote router and its PBX.

Otherwise you can create a voice-class codec and its preferences. example preference 1 g729r8, preference2 g711ulaw and so on.

the codec used in the wan link should be g729, or g723.

hope it works.

Orlando.

New Member

Re: PBX Integration

It doesn't work with just configure the codec. If not mistaken transcode need to be done with CCM or CME. But is anyone have a sample scenario for this case?

New Member

Re: PBX Integration

Yes, CallManager does transcoding, and one can specify the codec to use between regions, but I think in the scenerio described here, the PRI between the router and the PBX is treated like a connection to the PSTN (from the router's perspective). The only "IP-leg" of the call is between the two routers.

114
Views
6
Helpful
4
Replies
This widget could not be displayed.