type of transmission media
for voice and data communications
, connecting telephone company
subscribers to the telephone central office
(exchange) and computers in a local area network (LAN)
such as Ethernet
and Token Ring. It consists of two 19 to 26 American wire gauge (AWG)
wires encased in color-coded plastic insulation
, twisted around each other to minimize electromagnetic and radio-frequency interference induced from one wire
to the other. TP wires are categorized according to their thickness (thicker the better) such as CAT-3 for voice, CAT-4 for voice and 10-base-T, and CAT-5 for 100-base-T.
Also called twisted pair (TP). See also shielded twisted pair.