Twisted pair 双绞线
（重定向自Twisted pair cable）
![25-pair color code Chart](/Images/godic/202502/18/25_pair_color_code_chart.svg2222.png")
![Wire transposition on top of pole](/Images/godic/202502/18/Wire_Transposition.svg2222.png")
![Cross-section of cable with several unshielded twisted pairs](/Images/godic/202502/18/UTP-cable.svg2222.png")
![Unshielded twisted pair cable with different twist rates](/Images/godic/202502/18/UTP_cable2222.jpg")
Twisted pair cabling is a type of wiring in which two conductors of a single circuit are twisted together for the purposes of canceling out electromagnetic interference (EMI) from external sources; for instance, electromagnetic radiation from unshielded twisted pair (UTP) cables, and crosstalk between neighboring pairs. It was invented by Alexander Graham Bell.