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. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

CUCM6.1 - CUBE - CUCM6.1 with H.323


I have the following case. My customer wants to make interconnect between two CUCM 6.1 clusters through IP to IP gateway. The restriction is that one of the Clusters can't  use MTP resources. Also we want to preserve the supplimentary features. The most working configuration we found is:

1. Site1 - Intercluster Trunk - Inbound fast start - everything else default (no MTP used), using G.729.

2. Site 2 - Intercluster Trunk - Inbound and Outbound fast start - MTP used, using G.711.

3. CUBE - fast start, emptycapabilities

In this case we have two way calls. Supplimentary services doesn't work. For example when we put call on hold the stream is lost. Our MOH server supports G.729, and Site 2 has transcoder which transcodes the call from 729 to 711.

Please help if you have solution.


  • IP Telephony

Re: CUCM6.1 - CUBE - CUCM6.1 with H.323

do you mean in your cube the call will have one leg g711 and

the other call leg g729 ?

if this is the case you will need a local transcoder to be registered in the cube localy

i think 6.x you don't need MTP for IPIPGW using SIP trunk

This widget could not be displayed.