Netgear FS518T FS518 Installation Guide - Page 43
Twisted Pair Cables, interface ports
UPC - 606449020366
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Installation Guide for the Model FS518 Fast Ethernet Switch Twisted Pair Cables For two devices to communicate, the transmitter of each device must be connected to the receiver of the other device. The crossover function is usually implemented internally as part of the circuitry in the device. Computers and workstation adapter cards are usually media-dependent interface ports, called MDI or uplink ports. Most repeaters and switch ports are configured as media-dependent interfaces with built-in crossover ports, called MDI-X or normal ports. Figure C-1 illustrates straight-through twisted pair cable. 1 Tx 2 A 3 Rx 6 1 Rx 2 B 3 Tx 6 736EA Key: A = Uplink or MDI port (as on a PC) B = Normal or MDI-X port (as on a hub or switch) 1, 2, 3, 6 = Pin numbers Figure C-1. Straight-Through Twisted Pair Cable Figure C-2 illustrates crossover twisted pair cable. 1 Rx 2 B 3 Tx 6 1 Rx 2 B 3 Tx 6 737EA Key: B = Normal or MDI-X port (as on a hub or switch) 1, 2, 3, 6 = Pin numbers Figure C-2. Crossover Twisted Pair Cable Cabling Guidelines C-3