How to track IP phones in CUCM that have not been used for a long time?

Question

Telephony

It is necessary to track phones that have not been used by users for a long time, as an example, probably for outgoing calls.
I myself work in CUCM at the level of registering phones and creating lines, but unfortunately I don’t know how to track such phones.

Answer 1

Such information can be viewed when using extension mobility.