Q
Integrated Services Digital Network (ISDN) is a ___________ interface between the subscriber and the central office.
AA. Simplex
BB. Half-duplex
CC. Full-duplex
DD. Multiplex
Correct Answer:
C. C. Full-duplex
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.