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The colour coding for backbone unshielded
twisted-pair cables is given in Table 9.5
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Table 9.5 - Colour coding for backbone
UTP data cables
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| Tip conductors |
|
Ring conductors |
Tip conductors |
|
Ring conductors |
| White/blue |
Pair 1 |
Blue/white |
Black/brown |
Pair 14 |
Brown/black |
| White/orange |
Pair 2 |
Orange/white |
Black/slate |
Pair 15 |
Slate/black |
| White/green |
Pair 3 |
Green/white |
Yellow/blue |
Pair 16 |
Blue/yellow |
| White/brown |
Pair 4 |
Brown/white |
Yellow/orange |
Pair 17 |
Orange/yellow |
| White/slate |
Pair 5 |
Slate/white |
Yellow/green |
Pair 18 |
Green/yellow |
| Red/blue |
Pair 6 |
Blue/red |
Yellow/brown |
Pair 19 |
Brown/yellow |
| Red/orange |
Pair 7 |
Orange/red |
Yellow/slate |
Pair 20 |
Slate/yellow |
| Red/green |
Pair 8 |
Green/red |
Violet/blue |
Pair 21 |
Blue/violet |
| Red/brown |
Pair 9 |
Brown/red |
Violet/orange |
Pair 22 |
Orange/violet |
| Red/slate |
Pair 10 |
Slate/red |
Violet/green |
Pair 23 |
Green/violet |
| Black/blue |
Pair 11 |
Blue/black |
Violet/brown |
Pair 24 |
Brown/violet |
| Black/orange |
Pair 12 |
Orange/black |
Violet/slate |
Pair 25 |
Slate/violet |
| Black/green |
Pair 13 |
Green/black |
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