1. The total usable power gain of a carrier terminal or two-wire repeater.
Note: The maximum usable gain is determined by, and may not exceed, the losses in the closed path.
2. The sum of the gains, expressed in dB, acting on a signal passing around a closed path, i.e., a loop.

The noise contributed by one or both loops of a telephone circuit to the total circuit noise.
Note: In a given case, it should be stated whether the loop noise is for one or both loops.

A signal in which the network applies a high resistance between the tip and ring conductors at the network interface (NI). [T1.407-1997]

A supervisory signal given by a telephone or PBX in response to completing the loop path.

A test that uses a closed circuit, i.e., loop, to detect and locate faults.

Multipoint transmission in which (a) all the stations in a network are serially connected in one closed loop, (b) there are no cross-connections, (c) the stations serve as regenerative repeaters, forwarding messages around the loop until they arrive at their destination stations, and (d) any station can introduce a message into the loop by interleaving it with other messages. [From… (Read More →)

1. A method of performing transmission tests of access lines from the serving switching center, which method usually does not require the assistance of personnel at the served terminal.
2. A method of testing between stations (not necessarily adjacent) wherein two lines are used, with the testing being done at one station and the two lines interconnected at the distant… (Read More →)

A distributed-queue dual-bus (DQDB) scheme in which the head-of-bus functions for both buses are at the same location.

In computer security, synonym flaw.

See buffer.