I am new to Cisco IP Telephony.
Can someone guide me how to check the version of call manager running in my router?
I have a couple of 7940 phones which are not taking config from the call manager and I'm not sure whether their firmware is compatible with the call manager version i'm using.
Hope all is well with you
From the CLI you can type in sh telephony-service, this command will show you what verison of CME you are running.
Hope this helps!