Not sure if this is a bug, but when you try to copy a phone with Lines, it copies and creates the new phone and you can enter the new mac and save the new phone. After this, I am not able to modify any setting on this newly copied phone. The error you get is..
Update failed.  The specified name has invalid characters or is not formatted correctly for this device type.
Anybody know what error 491 is ?
When you click the save button you also get a popup saying, Keysize (Bits) is required. Please specify a value and try again. Authentication Mode - is Required. Please specify a value and try again.
Note that the callmanager cluster is not a secure cluster and i am not using encryption.