Registered Jack: Network Interface, Local Exchange Carrier, Long Distance Carrier, RJ11, RJ14, RJ21, RJ48 - Tapa blanda

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A registered jack (RJ) is a standardized physical network interface — both jack construction and wiring pattern — for connecting telecommunications or data equipment to a service provided by a local exchange carrier or long distance carrier. The standard designs for these connectors and their wiring are named RJ11, RJ14, RJ21, RJ48, etc. Many of these interface standards are commonly used in North America, though some interfaces are used world-wide. The physical connectors that registered jacks use are mainly of the modular connector and 50-pin miniature ribbon connector types. For example, RJ11 uses a 6 position 4 conductor (6P4C) modular plug and jack, while RJ21 uses a 50-pin miniature ribbon connector.