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350-801 · Question #305

When a call is delivered to a gateway, the calling and called party number must be adapted to the PSTN service requirements of the trunk group. If a call is destined locally, the + sign and the…

The correct answer is A. Configure the gateway to translate the calling number and apply it to the dial peer. Combine it E. Configure two calling party transformation patterns. To localize calling and called party numbers for a New York phone user via a SIP trunk to a local gateway, the Cisco UCM should employ calling party transformation patterns, and the gateway must be configured to translate calling numbers.

Voice Gateways and Session Border Controllers

Question

When a call is delivered to a gateway, the calling and called party number must be adapted to the PSTN service requirements of the trunk group. If a call is destined locally, the + sign and the explicit country code must be replaced with a national prefix. For the same city or region, the local area code must be replaced by a local prefix as applicable. Assuming that a Cisco UCM has a SIP trunk to a New York gateway (area code 917), which two combinations of solutions localize the calling and called party for a New York phone user? (Choose two.)

Options

  • AConfigure the gateway to translate the calling number and apply it to the dial peer. Combine it
  • BConfigure two calling party transformation patterns:
  • CConfigure two called party transformation patterns:
  • DConfigure the gateway to translate called numbers and apply it to the dial peer. Combine it with a
  • EConfigure two calling party transformation patterns:

How the community answered

(51 responses)
  • A
    82% (42)
  • B
    10% (5)
  • C
    4% (2)
  • D
    4% (2)

Why each option

To localize calling and called party numbers for a New York phone user via a SIP trunk to a local gateway, the Cisco UCM should employ calling party transformation patterns, and the gateway must be configured to translate calling numbers.

AConfigure the gateway to translate the calling number and apply it to the dial peer. Combine itCorrect

Configuring the gateway to translate the calling number and applying it to the dial peer allows the gateway to adapt the outgoing caller ID to meet specific PSTN requirements, ensuring the calling party's number is presented correctly for localization.

BConfigure two calling party transformation patterns:

This option is an incomplete statement, lacking the specific patterns or actions that define the transformation, making it too vague to be a complete solution.

CConfigure two called party transformation patterns:

While configuring called party transformation patterns is relevant for localizing the destination number, options A and E are provided as the correct solutions which focus on various aspects of calling party localization.

DConfigure the gateway to translate called numbers and apply it to the dial peer. Combine it with a

This option is an incomplete statement, as it trails off with 'Combine it with a', making it technically unanswerable and an invalid choice.

EConfigure two calling party transformation patterns:Correct

Configuring two calling party transformation patterns in Cisco UCM allows specific rules to be applied to the calling party number before it is sent to the gateway, facilitating necessary modifications like removing international prefixes or adding national prefixes for proper localization.

Concept tested: PSTN number localization with UCM and gateway

Source: https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/12_5_1SU1/dialplan/cucm_b_dial-plan-guide-1251su1/cucm_b_dial-plan-guide-1251su1_chapter_0100.html

Topics

#Number Localization#Cisco UCM Transformation Patterns#Voice Gateway Dial-Peers#PSTN Integration

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