You have a client who already has an effective system for making IP calls within the
organization. Yhe client would now like to contact external companies that are using
IP-based technology, which component should you suggest? Select exactly 1 answer(s)
from the following:
A.
SIP rgistrar
B.
firewall traversal solution
C.
gateway
D.
multipointcontrol unit
E.
gatekeepers
F.
streaming solutions