Loop line
Encyclopedia
Loop line could refer to:
- Loop aroundLoop aroundA loop line or loop around is a telephone company test circuit. The circuit has two associated phone numbers. When one side of the loop is called , the caller receives a test tone of approximately 1000 Hz...
, telephone company test circuit - Loop line (railway)Loop line (railway)Loop Line has several meanings.* A less important line which leaves a main line and then rejoins it later, continuing in the same direction. Significantly longer than a Passing loop, its purpose may be purely to provide a bypassing route, or it may provide a goods or passenger service in its own...