Which two Cisco Unified CallManager tasks are required to route calls from Cisco Unified CallManager to the PSTN via an H.323 gateway? (Choose two.)

Question

Options

• Aconfigure the IP phones with an external phone number mask
• Badd PSTN route patterns pointing to the gateway
• Cadd a gatekeeper from the Device menu
• Dconfigure the signaling protocol used on the voice circuit
• Econfigure the voice endpoints in Cisco Unified CallManager
• Fadd an H.323 gateway from the Device menu

• A
  6% (2)
• B
  92% (33)
• D
  3% (1)

Explanation

To route outbound PSTN calls through an H.323 gateway in Cisco Unified CallManager, two tasks are essential: (B) Add PSTN route patterns pointing to the gateway - route patterns define the dial strings (e.g., 9.@ or 9.[2-9]XXXXXXXXX) that CUCM uses to match outbound PSTN calls and route them to the correct gateway or route group; and (F) Add an H.323 gateway from the Device menu - you must explicitly define the H.323 gateway in CUCM (Device > Gateway) so CUCM knows the gateway's IP address and can send H.225/H.245 signaling to it. External phone number masks, gatekeepers, and endpoint configuration in CUCM are optional or unrelated tasks for basic PSTN routing.

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