When I make a PSTN call from a Conference IP Phone, it displays "unknown caller" instead of the calling number. I have already configured "caller-id enable" under voice-port. How can this be rectified.
I am elso experiencing one-way voice when an external (PSTN) call comes to the Phone. Could this be a routing issue. Attached is the show run config and the DN of the IP Phone in concern is 5035. Pls help me out.