Technical Terms and Definitions

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Line - Telecommunications

Line has the following definitions:

  1. A pair of wires carrying direct current between a central office and a customer's terminal. A line is the most common type of loop. (also see loop)
  2. In carrier systems, the portion of a transmission system that extends between two terminal locations. The line includes the transmission media and associated line repeaters.
  3. Also used to indicate the side of a piece of central office equipment that connects to or toward the outside plant, the other side of the equipment is called the telco drop side.
  4. A family of equipment or apparatus designed to provide a variety of styles, a range of sizes, or a choice of service features.