An external caller calls into the corporate directory handler extension and selects the option to dial by name. The caller enters the digits "633" for user Mike Lee. The user is located in the directory and Cisco Unity Connection attempts the transfer, but the call fails. What is the most likely cause of this issue?
A.
User Mike Lee does not exist.
B.
Incorrect or missing search space in the directory call handler
C.
The Call Transfer service parameter is not enabled.
D.
User Mike Lee is not listed in the directory.
E.
Voice ports are out of service