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

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QuestionQ51

Voice Gateways and Session Border Controllers

Because of provider requirements, outbound calls from the Enterprise to the PSTN must begin on channel 1.

Which ISDN command changes channel selection on IOS to satisfy this requirement?

  • A isdn bchan-number-order descending
  • B isdn bchan-number-order ascending
  • C isdn protocol-emulate network
  • D isdn incoming-voice voice
Explanation

The isdn bchan-number-order ascending interface command makes IOS choose outgoing ISDN PRI B channels in ascending order, beginning with the lowest available B channel, B1. This satisfies a requirement for outbound calls to start with channel 1.

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