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The 6P2C, 6P4C, and 6P6C modular connectors are probably best known for their use as RJ11, RJ14, and RJ25 non-powered registered jacks, respectively (and 6P4C and 6P6C for powered RJ11 and RJ14, power being delivered on the outer pairs). These interfaces use the same six-position modular connector body but have different numbers of pins installed.
RJ11 is commonly used to connect DSL modems to the customer line. [ citation needed ] The conductors other than the two central tip and ring conductors are in practice variously used for a second or third telephone line, a ground for selective ringers , low-voltage power for a dial light, or for anti-tinkle circuitry to prevent pulse dialing ...
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 ...
Headsets using this wiring are sometimes indicated by white plastic separators between the rings. [61] [60] If a CTIA headset is connected to an OMTP device, the missing ground effectively connects the speakers in series, out-of-phase. This removes the singer's voice on typical popular music recordings, which place the singers in the center.
This page was last edited on 21 November 2023, at 11:00 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
In the mid-1970s, AT&T introduced modular connectors for the line cord and handset cords, requiring the RJ11 standard home telephone jack. Most customers who had Princess telephones were converted to modular jacks. In 1983, AT&T was preparing itself for divestiture of the Bell System.
The registered jack or modular jack in RJ11, RJ45 and other similar connectors used for telecommunications and computer networking; The telephone jack of manual telephone switchboards, which is the socket fitting the original 1 ⁄ 4 inch (6.35 mm) telephone plug
The Malaysian Telecommunications Department (now Telekom Malaysia) and Telecommunication Authority of Singapore (now Singtel) adopted Bell System-style 6P2C plugs and 6P4C "RJ11" sockets in the 1970s, with Ireland's P&T (now Eir) doing so (but with 6P6C instead of 6P4C sockets) slightly later, some time before BS 6312 was rolled out by BT in ...
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