Refer to the exhibit.
The user of IP phone A has opened a trouble ticket stating that he cannot call IP phone B. Where
is the best place to start troubleshooting this issue?
A.
IP phone B
B.
the Cisco Unified Communication Manager system in site A
C.
IP phone A
D.
lP phone A user
E.
the local VoIP voice gateway of IP phone B
F.
IP phone B user
Explanation: