Hi all, i used to have 4 3911 in my CUCM 7.1 working fine for 2 weeks!! I also have 2 spare 3911. Suddenly, one of them started restarting but not the usual way; it only shows a cisco logo (i cannot press any button) for 10 seconds and then it turns of and this is happening again. I use POE to power it. I replaced it with another spare one, it worked for 2 days and now it is doing the same thing. Also, the last 3911 did the same so no spare left now! Can i hardware restart it or something like this without accessing the menu of the phone?
they are running SIP3951.8-1-4-0
I have just used a power cube 3 and it works.
I plug it back to the switch and it does nothing! WS-C2960-48PST-S
I plug it in another Catalyst Express PoE and it has also the problem!
What solved the problem!!
removing from the intraface of the 2960 WS-C2960-48PST-S the command:
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