Cross over or straight cable?

Commonly used cable is the RJ45 cable. It is divided into 2 names: straight and cross-over cable. A straight cable is used for connecting 2 different devices. PC to Hub is an example of it. It is used by an RJ 45 but it is in “straight” configuration. Just think of the cable as the passage of data or information from location A (PC) to location B (HUB) or vice versa. It is called straight coz physically; we don’t need to cross the cables so we can connect the 2 devices. On the hub’s side, the internal circuitry will do the math for you. I term this as GBB. On the other hand, the cross-over cable is used for connecting the same devices (like hub to hub). There are 4 twisted pairs on a RJ45 cable. Pair1 is blue, pair 2 is orange, pair 3 is green and pair4 is brown. All pairs have white cables twisted with the main colour cable as shown below. Take note that from Pins1-8, all odd numbers are for white colours. For the meantime, I want to use the term GBB for the straight cable, and OBB (orange blue brown) for the cross over cable. So if networking should be done: a combination of more than 2 computers plus switches and hubs, you can use these 2 cables. What are you going to use? straight is different, same is cross. If you're not sure, try each cables and see what will work.
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