We have ran many months problem free on our Cisco CommunicationsManager server until last night. I came in this morning and all of our 7940 model and 7960 model phones in our headquarters office say 'Registering IP'. However all of the 7905 and 7941 models seem to be working perfectly fine.
In our remote offices, all phones are working as normal. The problem only exists in the headquarters office. Any ideas where to look first?
I was thinking about a switch issue, however that wouldn't necessarily explain the issue of only certain models. Any help is appreciated.
Communications Manager 126.96.36.19900-1