In the cable, STP, wire transfer data, such as UTP cable, eight wires, or four pairs of binary are. It should be understood that the difference of the UTP is that the shell is not round, it complex is that of the affect of the waves on the data, so as not. In terms of price, this cable of UTP-denominated and from the fiber light is Cheaper. The amount of light that Kabul is valid, no drop signal during life equal to 500 km, equivalent to 1640 feet.
in networks with and a ring of two types have been used. It was said that in this type of cable, etc. 4 wire pairs me twisted used of the two pairs of it one for sending data and another for receiving the operation information.