Industry-Standard Wiring Plans B-3
For smaller numbers of wires, such as wir es f or an individual telephone station or terminal, you may
use a second color-code scheme. T able B-2 lists this color code and the usual correspondence with
the paired-wire color code. The al ter nat e co lor cod e is incl ud ed be caus e s ometi me s the s ta tio n wir e
uses the first three pairs from the standard color code (white-blue, blue-white, and so on), while at
other times it uses th e six alternate colore d wires.
TableB-2 Second Color-Code Scheme for Smaller Numbers of Wires
Pair Number Wire Number Solid Color Strip e C o l o r Alterna t e C o l o r Pin Number
1 1 White Blue Green 4
12 BlueWhiteRed 3
2 1 White Orange Blac k 2
2 2 Orange White Yellow 5
3 1 White Green White 1
3 2 Green White Blu e 6