350-801 CLCOR: Implementing and Operating Cisco Collaboration Core TechnologiesDemo

By Cisco · Question Mode

QuestionQ211

On-Premises Call Control

A user reports that, when receiving an inbound PSTN call on their IP Phone, they cannot transfer the call to another PSTN number. What is causing this failure?

  • A The IP phone is configured with the wrong region.
  • B The incoming calling search space of the SIP trunk does not include the partition of the line in the IP phone.
  • C The service parameter related to Offnet to Offnet Call Transfer is set to TRUE.
  • D The gateway is configured with the wrong device pool.
Explanation

Cisco Unified Communications Manager blocks a transfer from one external (OffNet) endpoint to another when the Block OffNet to OffNet Transfer service parameter is set to True. This restriction prevents PSTN-to-PSTN transfers, helping to prevent toll fraud.

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