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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 ...
The origin of the "Keystone" module may be traced back to US Patent 4261633 of Aug 27, 1979 for a "Wiring module for telephone jack" - by Amp Incorporated. [1] The module referred to in that patent was affixed by "A pair of diagonally inclined mounting flanges (which) include stepped, panel bearing surfaces .. at the outer free ends thereof."
Keystone wall plates are made to work with many different types of cabling solutions, including coaxial, twisted pair, HDMI, optical fiber, etc. Keystone wall plates are made of plastic and have one to twelve ports. A keystone port is a hole in the wall plate which allows the insertion of a keystone module or other male or female cabling ...
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]
Newer NTE-5 master phone sockets have a removable front panel: the front panel and its wiring is the customer's, while the rear wiring is Openreach's. The removable panel allows separation of these two parts and independent maintenance, and access to a test socket to determine whether line faults are in the customer's wiring or Openreach's ...
This is a modular connector wired for one telephone line, using the center two contacts of six available positions. This configuration is also used for single-line telephones in many countries other than the United States. It may also use a 6P4C connector, to use an additional wire pair for powering lamps on the telephone set.