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UTP Twisted Pair
Mar 05, 2018

Talking about the twisted pair, we mostly know that it contains shielded twisted pair(STP) and an unshielded twisted pair(UTP).


UTP is the most frequently used type of network cable in LANs currently.This cable wraps around the eight signal lines in a plastic insulation jacket and has eight colours which are white/orange, orange, white/green, blue, white/blue, green, white/brown, brown(568B line sequence).But in fact, only four lines are useful which are white/orange, orange, white/green, green.Each pair of them is intertwined with each other to form a total of four pairs, hence the name of the twisted pair.


The purpose of the twisted pair intertwined with each other is to use the electromagnetic field produced by the copper wire interaction to offset adjacent lines and reduce interference from the outside world.


Each pair intertwined with each inch length determines the ability of anti-jamming and the quality of communication.The more tightly wrapped, the higher quality of the communication owns, so it can support higher network data transfer rate, of course, its cost is higher.