We are experiancing a few phones at 1 location that are cutting out during a internal or external call. If you hit the ? twice during the call all the phone effected are experiancing a lot of packet loss. Sometime the effected phones will also re-register with CallManager on their own.
The problem is at the Corporate office local to all servers including Call Manager. I do have auto QoS on the 4500 switch that these phones are plugged into. I have 250 additional phones at the same location that are not having any problems. I found documentation on Cisco's website that states a network problem but, nothing in the network has changed. A network problem is kind of a general error.
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