Witch call control product or feature allows calls to endpoints that are outside of the firewall? Se

networkmanagers

13 years ago

Witch call control product or feature allows calls to endpoints that are outside of the firewall? Select exactly 1 answer(s) from the following:

A.
CiscoTelePresenceVCS Expressway

B.
E.164 number and DNS zones

C.
Call policy

D.
Interworking