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Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide
OL-17309-02
Appendix D Industry-Standard Wiring Plans
Telephone Wire Color Codes
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 lists the sequences. Note that red-brown and red-orange wires may be easily confused.
8Black
9 Yellow
10 Violet
11 Rose
12 Aqua
Table D-1 TIA/EIA–598 Color Code (continued)
Position Color
Table D-2 Telephone Industry 25-Pair Color Code and Pin Numbers
Pair Number Wire Number Solid Color Stripe Color Pin Number
1 1 White Blue 26
12BlueWhite1
2 1 White Orange 27
2 2 Orange White 2
3 1 White Green 28
32GreenWhite3
41WhiteBrown29
42BrownWhite4
51WhiteSlate30
5 2 Slate White 5
6 1 Red Blue 31
62BlueRed6
7 1 Red Orange 32
72OrangeRed7
8 1 Red Green 33
82GreenRed8