check loop
A device that is attached to interconnect the Go and Return paths of a circuit at the incoming end of a circuit on command to permit maintenance personnel to make a continuity check on a loop basis. [T1.110-1987]
A device that is attached to interconnect the Go and Return paths of a circuit at the incoming end of a circuit on command to permit maintenance personnel to make a continuity check on a loop basis. [T1.110-1987]