UTP stands for Unshielded Twisted Pair.
It is a regular copper wire that joins many home and many business computers to the telephone company.
UTP is the most common form of twisted pair wiring, because it is less expensive and easier to work with
than STP (Shielded Twisted Pair)
It is used in Ethernet 10Base-T and 100Base-T networks, as well as in home and office telephone wiring.
Two insulated copper wires are twisted around each other to decrease crosstalk or electromagnetic induction
between pairs of wires.
The twist in UTP helps to reduce crosstalk interference between wire pairs.
UTP Cable Standards Cat 3 UTP Category 3 UTP is rated to carry data up to 10Mbit/s.
Cat 5 UTP Category 5 UTP is rated to carry Ethernet up to 100Mbit/s and ATM up to 155Mbit/s.
Cat 5e UTP Cat 5e UTP is rated to carry data up to 1000Mbit/s.
Cat 6 UTP Category 6 UTP is very similar to Cat 5 UTP, except that it is designed and manufactured to even stricter standards.