The Straight Cable
The straight cable is a through cable, and it connects to the switch or hub. These cables function as the patch cords in an Ethernet connection. Both ends of these wires are the same. The TIA/EIA 568A standard has been replaced by TIA/EIA 568B. However, both cable standards are still used. They are similar, but are not the same. Both standards use unshielded twisted pair cables.
The Crossover Cable
The crossover cable formation can be used without a hub or switch. It is used in a peer-to-peer connection. It is used when one needs to connect two Ethernet devices together without a hub or switch. It can also be used to connect two hubs to each other. The simplest way to achieve this is to use the 568 A at one end and the 568B at the other end of the RJ45 plug.
Color Coding Of The Wires
There are a total of eight wires inside the cable, twisted into four pairs. Each pair has a primary solid-colored wire and another one with a primary white with a colored stripe running through its center. The stripe in the pair is of the same color as the solid color. The pinout for the cable 568A going from position one (that is, the wire that is attached to pin 1 of the RJ45 plug) is white/green, green, white/orange, blue, blue/white, orange, white/brown, brown, and that for the 568 B is white/orange, orange, white/green, blue, white/blue, green, white/brown, and brown. The easiest way to remember how to wire a crossover cable is to switch the set of wires, that is, to switch the solid green and the solid orange and the white/green and the white/orange.
Posted by: Wasim Javed
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