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The standards for telephone jacks and plugs vary from country to country, though the 6P2C style modular plug has become by far the most common type. A connection standard, such as RJ11 , specifies not only the physical aspects of an electrical connector , but also the signal definitions for each contact, and the pinout of the device, i.e. the ...
If the plug is disconnected from the jack, shorting bars allow the phone circuit to continue to the site phones. Only 4 conductors are used. RJ41S 8P8C, keyed For one data line, universal (fixed loop loss and programmed) RJ45S 8P8C, keyed For one data line, with programming resistor RJ48C 8P4C: For four-wire data line (DSX-1) RJ48S 8P4C, keyed
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]
GG45 is a variant of ARJ45 that allows for cables terminated with male 8P8C (AKA RJ45) connectors to be plugged into GG45 jacks. However, GG45 cables cannot plug into 8P8C jacks as a protrusion on the socket is designed to activate a switch on the jack for the alternative contact positions. [2]
The new system replaced the older hard-wired system, which came in many 'flavours' (e.g., Plans 1, 1A, 1B, 1C, 2, 2A, 105, 107 etc.), which could be very complicated and required the attendance at the premises of a GPO telephone-engineer, who needed a complete set of 'N' (wiring) Diagrams, [7] [better source needed] which was very extensive and ...
Male Mini-VGA plug on top of an Apple laptop, female port is second from right. Mini-VGA (used for laptops) Used for laptops, especially from Apple Computer and some from Sony. AV Multi (gold-plated male plug) AV Multi: Sony proprietary. Combines composite video, S-Video, RGsB/YP B P R (both use same pins) and stereophonic sound (two analog ...
Brazil adopted the "NBR 14136" standard, based on IEC 60906-1. South Africa implemented the "SANS 164-5" that also relies on 60906-1, although types D and M are still supported. Both countries are almost a decade with full enforcement of the new standards.
Pin 1 is typically indicated on the body of the connector by a red or raised "V" mark. The corresponding wire in a ribbon cable is usually indicated by red coloration, a raised molded ridge, or markings printed onto the cable insulation. On the connector pin 2 is opposite pin 1, pin 3 is next to pin 1 along the length of the connector, and so on.