Table A-3DB-9 – RJ-45 crossover adapter pinout
DB-9 Pin | Signal | RJ-45 Pin |
1 | DCD | 1 |
| | |
2 | RXD | 3 |
| | |
3 | TXD | 2 |
| | |
4 | DTR | 6 |
| | |
5 | GND | 5 |
| | |
6 | DSR | 4 |
| | |
7 | RTS | 8 |
| | |
8 | CTS | 7 |
| | |
9 | RNG | n/ca |
a. n/c=no connect
Table A-4lists the pinout for the straight-through adapter.
Table A-4DB-9 – RJ-45 straight-through adapter pinout
DB-9 Pin | RS-232 Signal Name | RJ-45 Pin | Ethernet Signal Name |
1 | DCD | 1 | TX + |
| | | |
2 | RXD | 2 | TX – |
| | | |
3 | TXD | 3 | RX + |
| | | |
4 | DTR | 4 | n/ca |
5 | GND (signal) | 5 | n/c |
| | | |
6 | DSR | 6 | RX – |
| | | |
7 | RTS | 7 | n/c |
| | | |
8 | CTS | 8 | n/c |
| | | |
9 | RNG | n/c | none |
| | | |
a. n/c=no connect
CT1 and CE1 I/O Modules
CT1 I/O modules have 24 RJ-48C female connectors. CE1 I/O modules have either 20 RJ-48C female connectors or two 25-pair female Telco connectors. Figure A-3shows the location of the ports on a CT1 I/O module and the sequence of the pins in the RJ-48C connector. CE1 I/O modules equipped with RJ-48C connectors have the same configuration as CT1 I/O modules equipped with RJ-48C connectors.
