The IP address you see in CUCM is not being given to the 7965 unless your CUCM server is also the DHCP server. If it is not, that's actually the last known IP address for that device which it has a status of unregistered for. That IP is cached for a finite period of time and will eventually age out and you'd see "Unknown" as status for registration and IP address. I suspect that the phone may be having an issue communicating with the CUCM or some other issue unrelated to the IP address you see in CUCM.
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...