Q56: What is the standard way of connecting the Twisted Pairs?


A56: Generally speaking, the Twisted Pairs are used to construct the Star-shaped network in the Cabling System. Each Twisted Pair connect the network facilities with each other through RJ45 Port Plug fixed in the two ends. The standard way of connecting the Twisted Pairs is not stipulated at random, but to keep the symmetry of the overall arrangement of the whole Cabling System so that it can eliminate the mutual interference of the Patch Cables inside the connector.
CAT5e is one of network cables most frequently used in the Cabling System. It can be divided into the Shielded and the Unshielded. If you want to install the Patch Cables outdoor, we advise you of using the Shielded ones. And if you install them indoor, the Unshielded ones will be OK. Because the Unshielded Patch Cables are without the shielded layer, this kind of Patch Cables will be relatively softer than the Shielded ones. But the way of connecting them is similar. Generally speaking, there are 4pairs slimlines bundled in the CAT5e Patch Cables, and they are marked by the different colors.
There are two ways of connecting the Twisted Pairs: They are fixed according to the standard of EIA/TIA 568B and EIA/TIA 568A. More details are below:

According to the sequence of T568A:
1 2 3 4 5 6 7 8
green-white green orange-white blue blue-white orange brown-white brown

According to the sequence of T568B:
1 2 3 4 5 6 7 8
orange-white orange green-white blue blue-white green brown-white brown

Straight Line: The two ends are connected according to the standard of T568B.
Crossover Line: One end is connected according to the standard of T568A, the other T568B.