Cisco Console RJ45 to DB9 Pin Cable Pinout - AllPinouts
From AllPinouts
Use this cable to configure a Cisco router through the Console port at the router.
This cable is also suitable to be used with Sun T2000.

9 PIN D-SUB FEMALE to the Computer

RJ45 MALE CONNECTOR to the Cisco router
| RJ45 | DB9 | ||
|---|---|---|---|
| RTS | 1 | 8 | CTS |
| DTR | 2 | 6 | DSR |
| TXD | 3 | 2 | RXD |
| GND | 4 | 5 | GND |
| GND | 5 | 5 | GND |
| RXD | 6 | 3 | TXD |
| DSR | 7 | 4 | DTR |
| CTS | 8 | 7 | RTS |