Domain.com is performing a backup in anticipation of a Cisco Unity Express upgrade. The system operator is taking the CUE module offline during one of the company’s busiest times. What will the result be?

A.
Callers will notice no difference for the duration of their existing call

B.
Subscribers will not see difference

C.
Callers and subscribers will be cut off without warning

D.
Subscribers will only be affected when their current “subscription” is complete

E.
A warning goes out to the subscribers, who can then alert callers to the anticipated down time