The difference between an RJ11 and an RJ12 cable is based on the number of wires used within the cable and how the wires are arranged. RJ11 includes four wires, and two slots are not used. RJ12 uses wires in all six available slots.Continue Reading
"RJ" refers to the standard for registered jacks used in telephone lines. The abbreviation includes two numbers identifying the specific purpose for the connector. The RJ11 and RJ12 standards look very similar because they use the same connector, which includes six slots.
Telephone lines use both wiring standards, but RJ12 is additionally used in some other applications, such as corporate private branch exchange phone systems. RJ12 is used less commonly than is RJ11, which is used frequently in home telephone service. RJ11 also is used in digital subscriber lines to provide broadband Internet access and for other purposes.
RJ refers to both the female connector and its accompanying wiring, but confusion of the term's meaning leads to its misuse as a general term for connectors, such as those used for Ethernet. The Bell System introduced registered jacks in 1976. The Federal Communications Commission adopted the new standard as federal law in the 1980s. In addition to RJ11 and RJ12, several other types of RJ lines are used in alarm systems and data connections.Learn more about Computers & Hardware
RJ stands for Registered Jack, part of the Universal Service Ordering Code system developed by Bell Systems and adopted in part by the FCC. The Registered Jack wiring configurations allow communication between the consumer's premises and the public network. The pinout for a single line-6 contact male connector is contact 3-red and contact 4-green using the Bell color system.Full Answer >
An RJ12 is a registered telephone jack with six pins, also known as a 6-position modular connector, which is used for voice communications, specifically analog or telephone wiring. The previous version was RJ11 that used only four pins.Full Answer >
Wiring an RJ45 Ethernet cable requires only a few tools and knowing whether you need a straight-through or crossover cable. Straight-through cables connect different types of devices and have the same colored cable order at both ends: orange-white, orange, green-white, blue, blue-white, green, brown-white, brown. Crossover cables connect similar devices and have the same pin out order as straight-through on one end and the following on the other end: green-white, green, orange-white, blue-white, orange, brown-white, brown.Full Answer >
To install a new processor, start by disconnecting all cables and wires connected to the CPU cooling fan. Carefully remove the CPU cooler, and pull out the computer's motherboard. If you're installing an Intel CPU, rotate all four mounting pushpin caps to the left. Next, gently pull each of the pushpins straight up until you feel them release.Full Answer >