I have question that I'm hoping to gain a better insight/clarification to the Codec selection process on h323 dialpeers and CUCM regions.
Scenario: An h323 trunk between a CUCM cluster and a CME/CUE ISR. Typical scenario of utilizing g729 over the WAN, but of course CUE can only use g711. Currently, a transcoder on the CME is allowing this to work properly.
Question: Is there any way to configure this in such a way that when two IP phones connect, g729 is established, but if the CME phone forwards the call to the CUE Pilot, the CUCM Phone will establish g711 to the CUE eliminating the need for a transcoder?
Yes, use the a voice class codec command. VoIP dial peers use g729 by default. A voice class allows you to specify an list of multiple codecs that will be included in the H.245 capabilities exchange. The order of the codecs listed indicates their preference.
Thanks for the reply Jonathan, I am familiar with voice class codecs, but still wondering if it's possible to utilize 729 for CUCM <-> CME phone-to-phone calls, while renegotiating to 711 when transferred by the CME phone to the CUE.
I am going to experiment by labbing it - but just looking for any insight others may be able to offer.
SIP traces provide key information in troubleshooting SIP Trunks, SIP
endpoints and other SIP related issues. Even though these traces are in
clear text, these texts can be gibberish unless you understand fully
what they mean. This document attempts to br...
Please find the attached HTML document, download and open it on your PC.
This provides an easy to use form where you simply answer a few
questions and it will render the proper jabber-config.xml file for you
to copy/paste. There is built in logic to verif...
CUCM Database Replication is an area in which Cisco customers and
partners have asked for more in-depth training in being able to properly
assess a replication problem and potentially resolve an issue without
involving TAC. This document discusses the bas...