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Appendix D
Industry-Standard Wiring Plans
Table D-1
Position
8
9
10
11
12
Telephone Wire Color Codes
To help simplify wire management, AT&T has devised a uniform scheme for dealing with large numbers
of wires for the telephone industry. The scheme uses two color codes—one for large numbers of wires
organized in pairs—and the other for smaller numbers of wires that can also be organized in pairs. We
recommend that you try to implement this wiring scheme whenever possible.
For large numbers of wires, each pair is assigned a two-color code. The colors are selected from two
groups of five, resulting in what is called a binder-group of 25 pairs. The colors used for a group are
white, red, black, yellow, and violet. The colors used for "pair within a group" are blue, orange, green,
brown, and slate.
Each pair must have a unique color combination. One wire within each pair has a solid background of
its group color and stripes of the "pair within a group" color; the second wire has the colors reversed.
Table D-2
Table D-2
Pair Number
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
OL-17309-01
TIA/EIA–598 Color Code (continued)
Color
Black
Yellow
Violet
Rose
Aqua
lists the sequences. Note that red-brown and red-orange wires may be easily confused.
Telephone Industry 25-Pair Color Code and Pin Numbers
Wire Number
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide
Solid Color
Stripe Color
White
Blue
Blue
White
White
Orange
Orange
White
White
Green
Green
White
White
Brown
Brown
White
White
Slate
Slate
White
Red
Blue
Blue
Red
Red
Orange
Orange
Red
Red
Green
Green
Red
Telephone Wire Color Codes
Pin Number
26
1
27
2
28
3
29
4
30
5
31
6
32
7
33
8
D-3
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