Twisted pair cabling is a form of wiring in which two conductors are wound together for the purposes of canceling out electromagnetic interference (EMI) from external sources, electromagnetic radiation from the UTP cable, and crosstalk between neighboring pairs.
Twisting wires decreases interference because the loop area between the wires (which determines the magnetic coupling into the signal) is reduced. In balanced pair operation, the two wires typically carry equal and opposite signals (differential mode) which are combined by subtraction at the destination. The common-mode noise from the two wires (mostly) cancel each other in this subtraction because the two wires have similar amounts of EMI. differential mode also reduces electromagnetic radiation from the cable, along with the attenuation that it causes.
Twisted pair (bükümlü tel) deniyor bu birbirine dolanmış kablolara.Bükümlü tel kullanılmasının sebebi kabloların dışarıdan kaynaklanan gürültüyü ve diğer kablolardan kaynaklanan interferansı yok etmesidir. Data alışverişi 4 kablo ile yapılıyor tabi ama diğer 4 kablo da datanın uzak mesafelere bozulmadan gitmesi için rol oynuyor.