Refer to the exhibit. 

Which three options are potential reasons the FXO port is not receiving Caller ID? (Choose three.) 

Answer options:

A. "Enable Caller ID" was not configured on the Cisco Unified Communications Manager configuration.
B. The FXO port was configured to "loop-start" instead of "ground-start".
C. The Timing Guard-out parameter is incorrectly set to 1500 ms.
D. "Connection polar opx immediate" was used and does support caller ID.E. Gateway with IOS 12.4(24T) was used and does not support this feature.
F. The NTFY message contains a Hung Up parameter.

ACE