How should the directory number of the phone and the Cisco TelePresence endpoint be configured
in the Cisco Unified Communications Manager?

A.
As a shared line where the codec and IP phone share the same directory number

B.
As a single line for the codec and a single line for the phone using the same directory number.

C.
As an overlay line using the same directory number

D.
As a single line for the phone and it only has a directory phone number. The codec uses the IP
address of the phone