UTP category5,4 paris unscreened cables.(UTP cat 5),suitable between workstations and other horizontal distribution line. UTP category5,4 paris unscreened cables.(UTP cat 5),suitable between workstations and other horizontal distribution line.They are widely used in voice net,ISDN,ATM155Mbps,100Mbps TPDDL,Ethernet,and high speed Ethernet