(UTP) Normal telephone wire (in the USA).It may be used for computer to computer communications, e.g. using a version of Ethernet or localtalk.It is much cheaper than standard "full-spec" Ethernet cable.It comes in five "catagories":cat. wires transmission 1 two voice no data (telephone cable) 2 four data up to 4 Mbps 3 four data up to 10 Mbps 4 four data up to 16 Mbps 5 four data up to 100 Mbps(2003-07-04)