Match Each Statement Below with the Correct Item

Multiple Choice

Match each statement below with the correct item
-A signal that indicates that a subscriber's telephone is off-hook and the circuit is not available for connection.

A) AM
B) Backbone
C) Carrier wave
D) Companding
E) Band
F) 5ESS
G) Busy circuit
H) Codec
I) Common channel signaling
J) 1ESS