The Telephone Cable is the telephone into the household line, connected to the telephone machine, to make a call. It is divided into 2 cores and 4 cores telephone cable and 6 cores phone cable as well as 8 Cores Telephone Cable.There are three kinds of conductor materials: copper-clad steel, copper-clad aluminum and all-copper. The all-copper conductor has the best effect.And all Flat Phone Cable are use copper conductor. Telephone Wire include Round Telephone Cable flat phone cable.