Color Coding of UTP

STRAIGHT CABLE: BOTH END SAME
CROSS CABLE : 1236    AND 3612
ROLLED CABLE:ALL PAIRS ARE DIFFRENT
1236
6321

1 ORANGE-WHITE (TX+)
2 ORANGE (TX-)
3 GREEN-WHITE (RX+)
4 BLUE
5 BLUE-WHITE
6 GREEN (RX-)
7 BROWN-WHITE
8 BROWN


Only 4 Wires is used to make data Transfer , Remaining wires send Dummy signals.