A great number of my phones are cutting off , disconnecting calls. This happens a couple times a day. I am recieved the following error.
Error: DeviceUnregistered - Device unregistered.
Device name.: SEP0017E0D8147B
Device IP address.: 172.29.24.30
Device type. [Optional]: 309
Device description [Optional].: Patrick Alton
Reason Code [Optional].: 8
App ID: Cisco CallManager
Cluster ID: StandAloneCluster
Node ID: 172.29.12.253
Explanation: A device that has previously registered with Cisco CallManager has unregistered. This event may be issued as part of normal unregistration event or due to some other reason such as loss of keepalives.
Recommended Action: No action is required if unregistration of this device was expected..
Any help is appreciated.