RJ11, RJ45 connector
Industry standard RJ-type jacks for receiving mating modular plugs have become extremely common and are found in virtually every telecommunications and data communications system worldwide. The RJ-series connector, such as the RJ-11 and RJ-45 connectors, represents such a standard connector. The standard RJ-series modular connector includes a plug or contact block and a jack or socket having a certain number of mating contacts. The plug includes a small block shaped body typically having pressure activated blades which can be crimped on to a cable. RJ-45 connectors were originally developed to terminate flat telephone cable and are very well suited to that application. In recent years these connectors have also been used for data communications purposes including terminations of unshielded twisted pair (UTP) cable for high speed data transmission. An RJ-45 cable is typically available having an RJ-45 connector attached to each end. A modular jack assembly, known as an RJ-45 connector assembly or an RJ-11 connector assembly, comprises a plug connector and a mating receptacle connector. An RJ-45 connector assembly used for a network communication has dimensions larger than those of an RJ-11 connector assembly which is used for a telephone. The RJ-45 connector has a larger width dimension than the RJ-11 and is configured to facilitate eight connections. The RJ-11 is configured for four connections but has a form factor to accommodate six. RJ-45 sockets are mounted in ports or interfaces in electrical appliances such as computers to connect signals transported electric wires to the appliance. The socket can be integrated into a circuit board and can be accessed through a port in the housing or enclosure of associated equipment or can be molded directly into an enclosure and wired to a circuit board. The interior surface of the socket includes a receiving notch for accepting the retention clip of the plug so as to mechanically secure the plug within the socket. Once the retention clip has snapped into place within the receiving notch through a flexing action of the retention clip away from the body of the plug, the plug is firmly held in place providing secure mechanical and electrical coupling.
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