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Cat5e Wiring Diagram

Cat6 Wiring Diagram

Cat 5 Wiring Diagram

RJ45 Cat 5, Cat5e and Cat6 Wiring Diagram

While 568B is more common than 568A you can use either one as long as the same scheme id used
on both ends. For a cross-over cable use 568A on one end and 568B one the other end.
# COLOR
1 White/Green
2 Green
3 White/Orange
4 Blue
5 White/Blue
6 Orange
7 White-Brown
8 Brown
EIA/TIA 568A Color Scheme

568A Diagram
EIA/TIA 568B Color Scheme

568B Diagram

POTS (Plain Old Telephone Service) RJ11, RJ14, RJ25

Holding the connector in your hand tab side down with the cable opening toward you, the pins are
numbered 1-6, left to right.

position RJ25 pin RJ14 pin RJ11 pin Pair Cat 5e/6 colors Old colors
1 1     3 T+ Pair 3 Wire 1 Cat 5e/6white/green Pair 3 Wire 1 Oldorange
2 2 1   2 T+ Pair 2 Wire 1 Cat 5e/6white/orange Pair 2 Wire 1 Oldblack
3 3 2 1 1 R- Pair 1 Wire 2 Cat 5e/6blue Pair 1 Wire 2 Oldred
4 4 3 2 1 T+ Pair 1 Wire 1 Cat 5e/6white/blue Pair 1 Wire 1 Oldgreen
5 5 4   2 R- Pair 2 Wire 2 Cat 5e/6orange Pair 2 Wire 2 Oldyellow
6 6     3 R- Pair 3 Wire 2 Cat 5e/6green Pair 3 Wire 2 Oldblue

*Note older 6 pair solid bellwire cables may substitute white for orange.

In standard structured wiring both Cat 5e and Cat 6 data cables are used for both voice or data. The color codes above are the standard defined by TIA.