In which two scenarios would a caller who is calling into the Cisco Unity Connection general pilot number hear the opening greeting of the voice-mail system and be prompted for a user ID and PIN? (Choose two.)
A. non-subscriber
B. subscriber who sends the calling number
C. subscriber who does not send the calling number
D. A SIP phone user will always be prompted for a user ID and PIN.
E. An SCCP phone user will always be prompted for a user ID and PIN.
F. The scenario is invalid.
