📝 Question
#2664
Integrated Services Digital Network (ISDN) is a ___________ interface between the subscriber and the central office.
✓
Correct Answer
C. full-duplex
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Explanation
ISDN provides a set of standards for maintaining different call states. It is a circuit-switched telephone network system. It acts as an interface, and only a single device can be connected to this interface. This interface is based on full-duplex mode of data transmission.
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