by Jeff Fisher
This page describes how to wire various kinds of telephone jacks.
Wire Color Codes
| Standard Quad-Wire Color codes | |||
| Pair 1 | T R | Green Red | |
| Pair 2 | T R | Black Yellow | |
| NOTE: Presented for historical reasons- nobody uses quad wire anymore. | |||
| Standard 4-Pair Wiring Color codes | |||
| Pair 1 | T R | White/Blue Blue/White | |
| Pair 2 | T R | White/Orange Orange/White | |
| Pair 3 | T R | White/Green Green/White | |
| Pair 4 | T R | White/Brown | Brown/White |
| NOTE: For 6-wire jacks use pair 1, 2 and 3 color codes. For 4-wire jacks use pair 1 and 2 color codes. | |||
Jack Lead Colors
| Jack Lead Colors | |||
| Pin # | Jack Type | ||
| 8P8C 8P8C Keyed | 6P6C | MMJ | |
| 1 | Blue (L) | White (W) | Orange (O) |
| 2 | Orange (O) | Black (B) | Green (G) |
| 3 | Black (B) | Red (R) | Red (R) |
| 4 | Red (R) | Green (G) | Yellow (Y) |
| 5 | Green (G) | Yellow (Y) | Black (B) |
| 6 | Yellow (Y) | Blue (L) | Brown (N) |
| 7 | Brown (N) | - | - |
| 8 | White (W) | - | - |
Standard Jack Wiring
Non-Standard Jack Wiring
The following wiring schemes are non-standard and violate category 5 ratings...but if you only have a single category 5 cable in the wall, you can wire it to the jacks in one of two ways to still have telephone and network connections.
This is how to wire one cat 5 cable into a network and a two-line jack:
This is how to wire one cat 5 cable into a network and two one-line jacks:
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