300-070 · Question #41
Which protocol is recommended to be used between Cisco Unified Communications Manager and the voice gateway to simplify the dial plan?
The correct answer is E. MGCP. MGCP (Media Gateway Control Protocol) is recommended between CUCM and Cisco voice gateways because it centralizes all dial plan intelligence in CUCM. With MGCP, the gateway acts as a media gateway under CUCM's direct control - it reports events (e.g., off-hook) and executes instr
Question
Which protocol is recommended to be used between Cisco Unified Communications Manager and the voice gateway to simplify the dial plan?
Options
- ASIP
- BSCCP
- CH323
- DRSVP
- EMGCP
How the community answered
(51 responses)- B2% (1)
- C2% (1)
- D6% (3)
- E90% (46)
Explanation
MGCP (Media Gateway Control Protocol) is recommended between CUCM and Cisco voice gateways because it centralizes all dial plan intelligence in CUCM. With MGCP, the gateway acts as a media gateway under CUCM's direct control - it reports events (e.g., off-hook) and executes instructions from CUCM, requiring minimal dial plan configuration on the gateway itself. In contrast, H.323 and SIP require dial plan logic (dial peers, route patterns) to be configured on the gateway as well, increasing complexity. SCCP is used for IP phones, not gateways, and RSVP is a resource reservation protocol.
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