This sounds like a routing problem to me. It appears that you have proved that your headset is working properly. Everything you hear is coming from the CUCM. Once the call is established the CUCM is no longer in the picture. Your IP Communicator is communicating directly with the phone or gateway with which CUCM established the connection.
Make sure you can ping the device you are trying to call. If you cannot, resolve this issue then try your call again.
I have been able to get my Jabra headset to work with CIPC. A "bigger" issue is trying to make it work with Checkpoint's VPN Secure Remote. The latest version doesn't work with any version of CIPC newer than 2.01. Version 2.01 works, but any newer there isn't any audio at all. Double clicking on the ? key on the phone shows no TX or RX packets. Therefore Cisco did something which prevents the VPN from working.
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...