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A twisted pair cable is a very important network media. It can be used for phone communication and cable ethernet networks. Twisted pair cable is a type of wiring in which two conductors of a single circuit are twisted together for the purpose of canceling out Electromagnetic Interference (EMI) from external sources.

There are two types of Twisted Pair Cables:-

  1. STP
  2. UTP

Shielded Twisted Pair :

STP cable is copper conductive netting or casing, performed individually or with an external conductive shield around all pairs. It is heavier and more difficult to manufacture, but it can extraordinarily enhance the signaling rate in a given transmission plot. Twisting gives cancelation of magnetically induced fields and currents on a pair of conductors.

Unshielded Twisted Pair :

UTP cable is the copper media and inherited from telephony, which can be used for increasingly higher data rates, and is rapidly becoming the de facto standard for horizontal wiring, the connection between and including, the outlet and the termination in communication.

Category Of UTP :






CAT-1 1 MHz 1 Mbps 2 wires Telephone
CAT-2 4 MHz 2 Mbps 4 wires Telephone
CAT-3 10 MHz 10 Mbps 8 wires Token ring
CAT-4 16-20 MHz 16 Mbps 8 wires Ethernet
CAT-5 100 MHz 100 Mbps 8 wires Fast Ethernet
CAT-5e 100 MHz 1000 Mbps 8 wires Gigabit Ethernet
CAT-6 250 MHz 1000 Mbps 8 wires Gigabit Ethernet
CAT-6a 250-400 MHz 1000-10000 Mbps 8 wires 10 Gigabit Ethernet
CAT-7 400-600 MHz 1000-10000 Mbps 8 wires 10 Gigabit Ethernet
CAT-8 600 MHz above 40000 Mbps 8 wires 40 Gigabit Ethernet

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