Cisco 400-051 Exam

Refer to the exhibit. Which ds0-group option should you select to send automated number identification information on outbound calls for this digital T1 voice circuit?

  • A. e&m-fgd
  • B. e&m-fgd
  • C. fgd-eana
  • D. e&m-delay-dial
  • E. fgd-os
Answer: Option C.
Explanation: 

E&M signaling is often the preferred option for CAS because it avoids glare, it provides answer/disconnect supervision and it can receive Automatic Number Identification (ANI) with FGD and send ANI with FGD-EANA. In other words, you can have 1 channel-group for incoming calls and 1 channelgroup for outgoing calls.

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