The connectors are not entirely compatible with one another because of the keying used in RJ45 8P8C connectors can plug into RJ45 receptacles, but the inverse is not true. The differences between 8P8C connectors and RJ45 connectors are shown in the following diagram: There are a variety of 8P8C connectors out there, with the modern RJ45 Ethernet connector being the most prevalent.Īs a result of the close similarities, “RJ45” became the designated informal misnomer for any eight-pinned jack (8P8C modular connector) used in computer networking (Ethernet). Individual wires are then inserted into these positions. In 8P8C connectors, each plug has eight positions that are spaced approximately 1 mm apart. 8P8C ConfusionĨP8C refers to the array of pins, hence the name Eight Position, Eight Contact. With the advent of computer networking, a new but very similar connector was developed to carry out data transfer: 8P8C. The connectors of the RJ platform were developed as much smaller and cheaper replacements to the older telephone installation methods of hardwired cords or bulky plugs. RJ stands for “registered jack,” and the true RJ45 connector was originally developed as part of the standardized telecommunication network interface for the purpose of connecting telephone networks. It’s good installation practice to keep the cable runs as short as possible and avoid unnecessary excessive cable service loops.Let’s start with RJ45, perhaps the term most widely used to refer to Ethernet cables today. Anything over this distance will introduce interference and losses on the cable, which will be seen as errors, dropped traffic packets, and reduced throughput. This includes 5m of patch cables at either end of the cable run, so the fixed cabling’s actual distance is 90m. The recommended maximum length for any structured cabling is 100m. VSAT Satellite Training What is the Maximum Length of an Ethernet Cable? Make sure the outer sheath is inside the RJ45 crimp.Snip the wires so they are all the same length.Sort them out to the correct color codes for the pinout.Trim off any nylon strands or wire guides.Trim the outer sheath back about 10mm to expose the inner conductors.RJ45 Cross Over Ethernet Cable Pinout How to Crimp an RJ45 Ethernet Cableįollow these steps to make sure you make the perfectly crimped RJ45 connector: Cross-over Ethernet Cable Pinout RJ45 Pinout for a Crossover LAN Cable These cables are sometimes made with a cable that has a red outer sheath. Care must be taken to clearly identify a crossover cable so it is not used by mistake, which may cause network outages. A crossover LAN cable will connect the receive at one end to the transmit at the other. Most modern IT equipment can auto-detect that a crossover needs to be made and change the signal. Crossover Ethernet CableĬrossover Ethernet cables are used to connect two devices of the same type, for example, if you want to connect two routers or two PCs. Remember that Pin 1 is on the left hand side of the RJ45 connector with the clip at the rear.
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