UTP cable stands for unshielded twisted pair. As the name implies, it consists of two wires twisted around each other.
UTP cable is typically used for networking purposes and, as such, is the most used type of cable in the world. There are six different types of UTP cable designed for different applications, including telephone, computer network and ethernet applications from 1 Mpbs, for traditional telephones, to 1000 Mpbs for gigabit ethernet.
UTP cable typically uses copper wire. The various types of UTP, called CAT1, CAT2 and so on to CAT6, specify the exact type of wire, jack, the twist in the wires and the quality of the connection.