Cabling should be Category 5 Unshielded Twisted Pair (UTP) wire for optimum performance.
Here are the pinout assignments:
| From | To |
| 1 | 3 |
| 2 | 6 |
| 3 | 1 |
| 4 | none |
| 5 | none |
| 6 | 2 |
| 7 | none |
| 8 | none |
Here are the signal assignments:
| Pin | Signal |
| 1 | TD+ |
| 2 | TD- |
| 3 | RD+ |
| 4 | not used by 10BaseT (1) |
| 5 | not used by 10BaseT (2) |
| 6 | RD- |
| 7 | not used by 10BaseT |
| 8 | not used by 10BaseT |
Notes:1. On a telephone line this is TIP.
2. On a telephone line this is RING.