You can display CSQ stats on 7940's or any similar phones or you can run some sort or reporting. When an agent is calling or generally on hook, UCCX consider that this agent is on NOT READY state on do not route calls on the CAD. So by the way, No popup is pushed on the CAD. You can install a kind of wallboard if you want to see CSQ activity especially : Nb Calls in Queue and Waiting time Average
Cisco IP Phone Agent User's Guide 6.1 guide will help you:
I'm not able to access my old voice mail messages all of a sudden. The recording says something like 'the message is currently not available'. This has never happened before in all the years I have been using this system. I have t...