100BASE-TX

100BASE-TX is the predominant form of Fast Ethernet, providing 100 Mbit/s Ethernet. 100BASE-TX runs over two pairs of wires in category 5 cable. Like 10BASE-T, the proper pairs are the orange and green pairs (canonical second and third pairs) in the TIA-568B wiring standard. In TIA-568B, wires are in the order 1, 2, 3, 6, 5, 4, 7, 8 on the modular jack on each end. The colour-order would be orange/white, orange, green/white, blue, blue/white, green, brown/white, brown: {| border="1"\n|+ RJ-45 Wiring (EIA/TIA-568B)\n! Pin !! Pair !! Wire !! Color\n|-\n| 1 || 2 || 1\n| white/orange\n|-\n| 2 || 2 || 2\n| orange/white\n|-\n| 3 || 3 || 1\n| white/green\n|-\n| 4 || 1 || 2\n| blue/white\n|-\n| 5 || 1 || 1\n| white/blue\n|-\n| 6 || 3 || 2\n| green/white\n|-\n| 7 || 4 || 1\n| white/brown\n|-\n| 8 || 4 || 2\n| brown/white\n|} Each segment can have a maximum distance of 100 metres. Capable of 100 Mbit/s throughput (200 Mbit/s in full-duplex configurations). See IEEE 802.3 for more details. The configuration of 100BASE-TX networks is very similar to 10BASE-T. When used to build a local area network, the devices on the network (computers, printers etc.) are typically connected to a hub or switch, creating a star network. Alternatively it is possible to connect two devices directly using a cross-over cable. See also: 100BASE-FX, RJ-45, 25 pair color code Based on material from FOLDOC, used with permission.