The console and auxiliary ports on Cisco IOS routers are asynchronous serial ports. The console port is configured as data communications equipment (DCE).
RJ45 FEMALE CONNECTOR at the Cisco
routers)
RJ45 MALE CONNECTOR at the cables
| Pin | Name | Description | Dir |
|---|---|---|---|
| 1 | RTS | Request To Send | OUT |
| 2 | DTR | Data Terminal Ready | OUT |
| 3 | TXD | Tranceive Data | OUT |
| 4 | GND | Ground | - |
| 5 | GND | Ground | - |
| 6 | RXD | Receive Data | IN |
| 7 | DSR | Data Set Ready | IN |
| 8 | CTS | Clear To Send | IN |