local loop

In telephony, the local loop (also referred to as a subscriber line) is the physical link or circuit, that connects from the demarcation point of the customer premises to the edge of the carrier, or telecommunications service provider, network. At the edge of the carrier network in a traditional PSTN (Public Switched Telephone Network) scenario, the local loop terminates in a circuit switch housed in an ILEC (Incumbent Local Exchange Carrier) CO (Central Office). Traditionally, the local loop was wireline in nature from customer to central office, specifically in the form of an electrical circuit (i.e., ) provisioned as a single twisted pair in support of voice communications. However, modern implementations may include a digital loop carrier system segment or fiber optic transmission system known as fiber-in-the-loop.
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Synonym loop.

<communications> The circuits between a telephone subscriber's residence or business and the switching equipment at the local central office.
(1995-03-17)

the circuit witch connects the subscriber into the subnet.