Local loop

In telecommunications, the local loop is the wiring between the central office ("telephone exchange" outside of the US) and the customer's premises demarcation point.

Related Topics:
Telecommunications - Central office - Telephone exchange - Demarcation point

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The telephony local loop connection is typically a copper twisted pair carrying current from the central office to the customer premises and back again. Individual local loop telephone lines are connected to the local central office or to a remote concentrator.

Related Topics:
Copper - Twisted pair - Remote concentrator

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Local loop connections can be used to carry a range of technologies, including:

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• analog voice (for traditional analog telephony).
• ISDN
• DSL:
• ADSL
• HDSL
• SDSL
• SHDSL
• VDSL

Making the local loop available, usually by law, to the owner's competitors, is referred to as local loop unbundling.

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Local loop: Last mile ►