The Users of CCM 4.2 are Extension Mobility Users and they use their mobile phone when not in the office.
The issue here is that the Receptionist manning the Attendant Console has no visibility if the User is busy on their mobile or not. My assumption is that the only way the Receptionist can know if the line she is dialing is busy is if the Mobile Service Provider feeds back via signaling (QSIG?) to the CallManager and the CallManager software can interpret this information and allows it to appear on the screen.
Any ideas? Have you encounter this issue and what was the fix?
Thanks a lot in advance,