The following guidelines are used to connect a 4-pair (that is, eight individual wire) Unsheilded Twisted-Pair (UTP) copper cable to an RJ-45 connector. This figure shows the typical arrangement of wires, and follows the Electronic Industry Association/Telecommunications Industry Association's (EIA/TIA) Standard 568B.
Straight-Through Cables
A “straight-through” cable has the wiring shown in Figure 4.6 at both ends of the cable (i.e., pins 1-8 on one end of the cable correspond to pins 1-8 on the other end of the cable). Straight-through cables are used to connect two devices of differing types. For example, straight-through cables connect: computer-to-switch, computer-to-patch-panel, and computer-to-modem.
Cross-Over Cables
In “cross-over” cables one end has the has Figure 4.6 and the other end changes the orange and green pairs. Cross-over cables are used to connect two devices of the same type. For example, cross-over cables connect: computer-to-computer, switch-to-switch, and modem-to-modem.
The arrangement of wires for cross over cables is as follo
ws:
Straight-Through Cables
A “straight-through” cable has the wiring shown in Figure 4.6 at both ends of the cable (i.e., pins 1-8 on one end of the cable correspond to pins 1-8 on the other end of the cable). Straight-through cables are used to connect two devices of differing types. For example, straight-through cables connect: computer-to-switch, computer-to-patch-panel, and computer-to-modem.
Cross-Over Cables
In “cross-over” cables one end has the has Figure 4.6 and the other end changes the orange and green pairs. Cross-over cables are used to connect two devices of the same type. For example, cross-over cables connect: computer-to-computer, switch-to-switch, and modem-to-modem.
The arrangement of wires for cross over cables is as follo
ws:
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