Data & Phone Cable Pair Assignments
This guide provides the standard pinout and pair assignments for common telephone and data plugs and sockets, including USOC, T568A, T568B, and Australian standards.
Flat Modular Cord with 6P6C RJ12 Plug/Socket (USOC)
| Pair | Line (+) Colour | Pin # | Line (-) Colour | Pin # |
|---|---|---|---|---|
| Pair 1 | Green | 4 | Red | 3 |
| Pair 2 | Black | 2 | Yellow | 5 |
| Pair 3 | White | 1 | Blue | 6 |
Category 5 Cable - T568A Configuration
The T568A configuration is the preferred standard in Australia.
| Pair | Line (+) Colour | Pin # | Line (-) Colour | Pin # |
|---|---|---|---|---|
| Pair 3 (Green) | Green/White | 1 | Green | 2 |
| Pair 2 (Orange) | Orange/White | 3 | Orange | 6 |
| Pair 1 (Blue) | Blue/White | 5 | Blue | 4 |
| Pair 4 (Brown) | Brown/White | 7 | Brown | 8 |
Category 5 Cable - T568B Configuration
| Pair | Line (+) Colour | Pin # | Line (-) Colour | Pin # |
|---|---|---|---|---|
| Pair 2 (Orange) | Orange/White | 1 | Orange | 2 |
| Pair 3 (Green) | Green/White | 3 | Green | 6 |
| Pair 1 (Blue) | Blue/White | 5 | Blue | 4 |
| Pair 4 (Brown) | Brown/White | 7 | Brown | 8 |
Australian 605 Plug
| Pair | Line (+) Colour | Pin # | Line (-) Colour | Pin # |
|---|---|---|---|---|
| Pair 1 | Green | 2 | Red | 6 |
| Pair 2 | Black | 1 | Yellow | 5 |
Australian 610 Socket
| Pair | Line (+) Colour | Pin # | Line (-) Colour | Pin # |
|---|---|---|---|---|
| Pair 1 | White | 2 | Blue | 6 |
| Pair 2 | Red | 1 | Black | 5 |
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