Copper pair

Normal telephone cable. The term the twisted pair cable (Twisted Pair) — a cable from 4 or 8 provodkov, twisted between themselves in pairs is often used. Copper pair is single-core and multicore (as a wire), screened and simple. Types of the twisted pair cable: UTP (unshielded cable of low quality); STP (more expensive shielded cable allowing to provide the best electromagnetic security of a system from noises); ScTP (a cable in which each pair is put into the separate screen); FTP (a cable in which pairs are put into the general screen from a foil); PiMF (a cable in which each pair is put into the separate screen, and all together — in the general).