We would like to have the number where the call is parked to be displayed on 7905G and 7961G-GE Phones. Is this possible and how can we do this?
From Cisco CallManager, choose Feature > Call Park to configure. This URL should help you:
it's not a native feature that can be turned on. Perhaps try posting your question on the Developer forum and someone can assist you with developing this, it should not be too difficult.