Twisted Pair (TP) Wires
Commonly used for telephones and LANs
Reduced electromagnetic interference
- Via twisting two wires together
(Usually several twists per inch)
TP cables have a number of pairs of wires
- Telephone lines: two pairs (4 wires, usually only one pair is used by the telephone)
- LAN cables: 4 pairs (8 wires)
Also used in telephone trunk lines (up to several thousand pairs)
Shielded twisted pair also exists, but is more expensive