The IP phone of user A is registered with Cisco Unified Communications Manager
subscriber1 while the IP phone of user B is registered with subscriber2. User A is speaking to
user B on an active call. A junior network engineer mistakenly reboots subscriber1.
What effect does this have on the call?

A.
User A can hear B, but B cannot hear A.

B.
User A cannot hear B, but B can hear A.

C.
This action drops the call.

D.
This action does not affect the call.

E.
The call remains active, but quality may suffer.