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  2. Modular connector - Wikipedia

    en.wikipedia.org/wiki/Modular_connector

    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]

  3. Telephone jack and plug - Wikipedia

    en.wikipedia.org/wiki/Telephone_jack_and_plug

    Telephone jack and plug. 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 ...

  4. Extension cord - Wikipedia

    en.wikipedia.org/wiki/Extension_cord

    Yellow NEMA 5-15 extension cord NEMA-1 extension cord, common in the United States Extension cord reel (Germany). An extension cord (US), extension cable, power extender, drop cord, or extension lead (UK) is a length of flexible electrical power cable (flex) with a plug on one end and one or more sockets on the other end (usually of the same type as the plug).

  5. Tip and ring - Wikipedia

    en.wikipedia.org/wiki/Tip_and_ring

    Tip and ring are the two conductors or sides of a telephone line. Their names are derived from the telephone plugs used for connecting telephone calls in manual switchboards. One side of the line is connected to the metal tip of the plug, and the second is connected to a metal ring behind the tip, separated and insulated from the tip by a non ...

  6. Registered jack - Wikipedia

    en.wikipedia.org/wiki/Registered_jack

    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 ...

  7. Analog telephone adapter - Wikipedia

    en.wikipedia.org/wiki/Analog_telephone_adapter

    A typical analog telephone adapter for connecting an analog phone to a VoIP provider. Wikimedia Commons has media related to Analog telephony adapter. An analog telephone adapter (ATA) or FXS gateway is a device for connecting traditional analog telephones, fax machines, and similar customer-premises devices to a digital telephone system or a ...

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