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For example, telephone cables in the UK typically have a BS 6312 (UK standard) plug at the wall end and a 6P4C or 6P2C modular connector at the telephone end: this latter may be wired as per the RJ11 standard (with pins 3 and 4), or it may be wired with pins 2 and 5, as a straight-through cable from the BT plug (which uses pins 2 and 5 for the ...
6P4C crimp-on style connector, commonly used for RJ11 and unpowered RJ14. The most widely implemented registered jack in telecommunications is the RJ11. This is a modular connector wired for one telephone line, using the center two contacts of six available positions.
Typically it will have a 6P4C or 6P2C modular connector at the telephone end: this latter may be wired as per the RJ11 standard (with pins 3 and 4), or it may be wired with pins 2 and 5, as a straight-through cable from the BT plug (which uses pins 2 and 5 for the line, unlike RJ11, which uses pins 3 and 4).
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 addition to the standard Swedish plugs and sockets, RJ11 connectors are quite common, especially in offices. Even 8P8C modular telephone sockets can be found. Most telephone equipment sold in Sweden today has RJ11 sockets and corresponding cables with 6P4C plugs on each end and an adaptor from RJ11 to SS 455 15 50 sockets.
Banana connectors; Binding posts; 3.5 mm TRS connector (miniature stereo headphone jack) British telephone socket either as a master socket or a secondary socket; An assortment of different keystone modules. From left to right: 6P6C (RJ-11), 8P8C (RJ-45) with mini 110 block in rear, 4-pin mini-DIN (S-Video) jack, RCA jack, F connector, banana jack.