Local loop: Difference between revisions

Revision as of 17:18, 25 March 2017

Revision as of 20:58, 23 May 2017

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{{unreferenced|date=February 2008}}

In [[telephony]], the '''local loop''' (also referred to as a '''local tail''', '''subscriber line''', or in the aggregate as the [[last mile]]) is the physical link or circuit that connects from the [[Demarcation_point|demarcation point]] of the [[Customer-premises equipment|customer premises]] to the edge of the [[common carrier]] or [[telecommunications service provider]]'s network.

At the edge of the carrier [[access network]] in a traditional public telephone network, the local loop terminates in a circuit switch housed in an incumbent [[local exchange carrier]] or [[telephone exchange]].

== Infrastructure ==

Traditionally, the local loop was an [[electrical circuit]] in the form of a single pair of conductors from the telephone on the customer's premises to the local [[telephone exchange]]. [[Single-wire earth return]] lines had been used in some countries until the introduction of electric tramways from the 1900s made them unusable.