Which of the following is an indication that a subscriber's telephone is on-hook and the circuit is available for connection?
A) In-band signaling
B) Framing
C) Frequency Modulation
D) Idle circuit

Question

Quizplus · Accepted Answer

The term "idle circuit" indicates that a subscriber's telephone is on-hook and the circuit is available for connection. This means that the line is not currently in use for a call and can be used for a new connection.

Which of the Following Is an Indication That a Subscriber's