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telephone line to phone cord: The wall jack. This connection is the most standardized, and often regulated as the boundary between an individual's telephone and the telephone network. In many residences, though, the boundary between utility-owned and household-owned cabling is a network interface on an outside wall known as the demarcation ...
The SAI provides the termination of individual twisted pairs of a telephony local loop for onward connection back to the nearest telephone exchange (US: "central office" (CO)) or remote switch, or first to transmission equipment such as a subscriber loop carrier multiplexer and then to the exchange main distribution frame (MDF).
Two simple NIDs, carrying six lines each, on the outside of a building A German copper phone line termination box called Abschlusspunkt LinienTechnik (APL, "Demarcation point") In telecommunications , a network interface device ( NID ; also known by several other names) is a device that serves as the demarcation point between the carrier's ...
20th century Bell Canada demarcation point for a single phone line. The spark-gap surge protectors on the left have hex heads for easy removal. Near center, a post is connected to the house's ground. The other two connection points are for tip and ring. A test jack can be attached nearby so the home-owner or tenant can verify whether the inside ...
Most newer US campgrounds with electrical hookups offer three outlets in the connection box: two-prong with ground 120-volt AC 20 amperes; three-prong RV 120-volt AC 30 amperes; and a four-prong RV 120/240-volt AC 50 amperes (which can power 120-volt loads and the large 240-volt loads at the same time).
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Serving Area Interface. In telecommunications, the term outside plant has the following meanings: . In civilian telecommunications, outside plant refers to all of the physical cabling and supporting infrastructure (such as conduit, cabinets, tower or poles), and any associated hardware (such as repeaters) located between a demarcation point in a switching facility and a demarcation point in ...