We just had an issue with a customer where all of their phones went down at once... when they rebooted the phones all got stuck at "Configuring IP Address".
I logged into the system to take a look, all the phones were unregistered.
When I did a debug on tftp events -- they were all trying to pull their config. (though it seems only the "Default" configs were going through successfully)
I did a "no create cnf-files" then "create cnf-files" in telephony-service.... this IMMEDIATELY fixed the problem -- all the phones were re-registered within seconds.
Has anyone seen this before? Any suggestions on what the cause could be?
It seems to be a 2-fold issue, 1. All the phones rebooted at the same time, 2. The config files were seemingly gone, corrupt, or inaccessible in some way.
For Cisco employees, SR #622640237 (UC520 - TAC)