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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?
Correct Answer: C
Explanation/Reference: Explanation: E&M signaling is often the preferred optino 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 channel-group for outgoing calls.