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 25 Pair 66 Block Color Coding

25 pair cable's color code table. Every pair is identified by a combination of 5 tip and 5 ring colors.

Please note that CAT5 cable shown for clarity of the illustrations (tightly twisted conductors). You will see the same color code in a lesser grade cable (CAT3, voice grade) but the conductors of the pair will not be as close together and so they will be marked with small stripes of the opposite color (blue stripes on white, white stripes on blue and so on). This way you can identify the conductors as belonging to the same pair even though they are not close together in the loose bundle of wires you get after stripping the jacket off

pair figure tip ring
1 white blue
2 white orange
3 white green
4 white brown
5 white slate
6 red blue
7 red orange
8 red green
9 red brown
10 red slate
11 black blue
12 black orange
13 black green
14 black brown
15 black slate
16 yellow blue
17 yellow orange
18 yellow green
19 yellow brown
20 yellow slate
21 violet blue
22 violet orange
23 violet green
24 violet brown
25 violet slate
pair figure tip ring


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Meditrix Asterisk configuration notes 66 Block 25 Pair Wiring Color Codes