Which digital signaling is correctly mapped to its functionality?
A. T1 PRI NFAS - Used to connect to the PSTN where caller ID is required and PRI is not an option
B. T1 CAS - Used widely in North America to connect to the PSTN or PBXs
C. T1 FGD - Uses a single D channel to control multiple spans of T1s with only B channels option
D. T1 and E1 PRI - Uses the Q Signaling variation of the basic ISDN specification
Which digital signaling is correctly mapped to its functionality?
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Which digital signaling is correctly mapped to its functionality?
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