A large enterprise solution uses a pair of gatekeepers for Call Admission Control. Each gatekeeper has multiple zones that are associated with it. Each zone has both voice and video gateways. The video gateways support both H.320 and H.323 video room systems. The customer requires the gatekeeper to provide video Call Admission Control and to facilitate video call routing to each type of video gateway. What should you do to meet these requirements?

A.
Assign a separate intrasite access code for each type of video endpoint.

B.
Assign a translation pattern that support only H.320 to H.320, and a different pattern for H.323 to H.323 calls.

C.
Assign each site a service prefix that will allow the gatekeeper to provide the appropriate Call Admission Control and call routing.

D.
Assign technology prefixes to each type of gateway so that the gatekeepers can provide the appropriate Call Admission Control and call routing to each call type.