• Consist of plastic insulated copper wires. Two lines were twisted to reduce noise. • One pair is used for one channel communication. • Twisted-pair cable has two forms. –Unshielded Twisted-Pair Cable -UTP –Shielded Twisted-Pair Cable - STP
• Consist of plastic insulated copper wires. Two lines were twisted to reduce noise. • One pair is used for one channel communication. • Twisted-pair cable has two forms. –Unshielded Twisted-Pair Cable -UTP –Shielded Twisted-Pair Cable - STP