- UTP: Unshielded twisted pair. - LSZH: Low smoke zero halogen. - 24AWG. - Stranded. - Flush moulded boot. - Snagless boot. - Strain relief. - 1Gbps. RJ45 Network cables connect any network enabled device such as a PC, printer, scanner etc to a network allowing data to flow to and from each device. Digital phone systems can also be run via RJ45 Network cables, a system known as Voice Over IP (VOIP).