Cisco Systems UBR7225VXR specifications Telephone Wire Color Codes

Appendix D Industry-Standard Wiring Plans

Telephone Wire Color Codes

Table D-1	TIA/EIA–598 Color Code (continued)
Position		Color
8		Black
9		Yellow
10		Violet
11		Rose
12		Aqua

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-groupof 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-2lists the sequences. Note that red-brown and red-orange wires may be easily confused.

		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
1				2	Blue	White	1
2				1	White	Orange	27
2				2	Orange	White	2
3				1	White	Green	28
3				2	Green	White	3
4				1	White	Brown	29
4				2	Brown	White	4
5				1	White	Slate	30
5				2	Slate	White	5
6				1	Red	Blue	31
6				2	Blue	Red	6
7				1	Red	Orange	32
7				2	Orange	Red	7
8				1	Red	Green	33
8				2	Green	Red	8
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