Which signaling protocol is appropriate for this situation?

You are configuring a network to support voice to the PSTN. One important aspect to the configuration is tobe able to determine the individual slot, subunit, and port number from the gateway endpoint identifier.Which signaling protocol is appropriate for this situation?
A. H.323
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Cisco 642-437 Exam
B. SIP
C. SCCP
D. MGCP

Correct Answer: D
Explanation/Reference:
Explanation: Endpoints are any of the voice ports on the designated gateway. These voice ports provideconnectivity to both analog ports and digital trunks to the PSTN. Ports on gateways are identified byendpoints in very specific ways. It is important to note that gateways can have multiple endpoints dependenton the number of ports it contains, and that the endpoints are case insensitive. A sample MGCP endpointaddressing scheme is provided below.

http://www.cisco.com/en/US/tech/tk1077/technologies_tech_note09186a00801da84e.shtml