(n) circuit
line
(P)
(n) (comp) trunk group
(n) (comp) line network
trunk network
(n) (comp) output line
(n) (comp) input line
(n) (comp) virtual circuit
VC
(n) (comp) telecommunications carrier
PTT
(n) circuit switching
(n) (comp) line type
line classification
(n) (comp) line termination
(n) (comp) hang-up
HUP (signal)
(n) (comp) contention
(n) (comp) line speed
(n) (comp) line bandwidth
(n) (comp) line trace
(n) (comp) line cost
(n) circuit load
(n) (comp) line capacity
circuit capacity
(n) (comp) trunk
inter-office line
(n) (comp) switched line
(n) (comp) public line (as opposed to a private or leased line)
(n) (comp) high speed line
(n) (comp) leased line
private circuit
private line
(n) leased line
private circuit
private line
(n) (comp) communication line
(n) telephone line
(n) (comp) data-circuit
(n) (comp) subscriber line
(n) (comp) line rate
(n) connection fee
interconnection fees