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IP Phone fails on Catalyst 3560 PoE Switch

keynet
Level 1
Level 1

Sometimes only one of several 7940 IP phones crashs. It ist necessary to reboot the phone. The problem is not specific to a phone. Several phone showed the problem but only one per time.

I updated the switch software to the newest release without success.

We are using callmanager 4.0.

Where ist the problem?

1 Reply 1

pradeepde
Level 5
Level 5

There was problem with 3550/3560 switch ports connected to 7940s become untrusted. CallManager version 4.0(2a) actually resolved it.