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A telephone jack and a telephone plug are electrical connectors for connecting a telephone set or other telecommunications apparatus to the telephone wiring inside a building, establishing a connection to a telephone network. The plug is inserted into its counterpart, the jack, which is commonly affixed to a wall or baseboard. The standards for ...
In some types of telephone and network plug, including the BS 6312 and the registered jack (RJ) family, generally separate wires in a sheath are used. In these applications, the outer sheath is stripped then the wires are inserted into the connector and a special termination tool is used to force the conductors into the contacts.
The first types of small modular telephone connectors were created by AT&T in the mid-1960s for the plug-in handset and line cords of the Trimline telephone. [1] Driven by demand for multiple sets in residences with various lengths of cords, the Bell System introduced customer-connectable part kits and telephones, sold through PhoneCenter stores in the early 1970s. [2]
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 local loop and the customer's premises wiring. Outdoor telephone NIDs also provide the subscriber with access to the station wiring and serve as a convenient test point for ...
The movable (less fixed) connector is classified as a plug (denoted P), [37] designed to attach to a wire, cable or removable electrical assembly. [38] This convention is currently defined in ASME Y14.44-2008, which supersedes IEEE 200-1975 , which in turn derives from the long-withdrawn MIL-STD-16 (from the 1950s), highlighting the heritage of ...
For larger cable assemblies more complex schemes, such as the 25-pair color code, are used. Some telephone technicians used mnemonic phrases, such as red-right-ring-rear, or ring-right-red-rough, to remember that the red wire connects to the right-side post in the wall jack and to the ring on the plug and to the rear lug on main distribution ...
Four-position, four-contact (4P4C) plug, used for connecting a telephone handset and base Six-position, six-contact (6P6C) jack , which could be wired as RJ11, RJ14, or RJ25335 A registered jack ( RJ ) is a standardized telecommunication network interface for connecting voice and data equipment to a computer service provided by a local exchange ...
BS 6312 431A plug, colloquially a British Telecom 4-wire male plug. British telephone sockets were introduced in their current plug and socket form on 19 November 1981 by British Telecom to allow subscribers to connect their own telephones. The connectors are specified in British Standard BS 6312.