On an IP phone line appearance, for which two purposes is the Display parameter designed to be
used? (Choose two.)

A.
display a number other than the directory number of the IP phone

B.
display a name instead of the directory number of the IP phone

C.
internal caller ID

D.
external caller ID

E.
full directory number ID for outgoing calls

Explanation:
Link:

http://cisco.biz/en/US/docs/voice_ip_comm/cucmbe/admin/8_6_1/ccmsys/a03dn.html#wp1100362