Is there a built in tool for CM 6.1 to inventory
all phones on the network? If not, what are the best tools to use in order to accomplish? I'm trying to put together a list of serials for SMARTnet.
CUCM doesn't have this. Serial number is of no significance to CUCM whatsoever so it doesn't store it.
You need a 3rd party tool for this. If you search CSC for phone + serial you should get plenty of threads with suggestions.
I can recall one called serial grabber, if you google it you'll get more info on it.
If this helps, please rate