APPENDIX C
Cable Pinouts
C-4
Tabl e C-3 lists the pinout for the crossover adapter.
Tabl e C-4 lists the pinout for the straight-through adapter.
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 C-3 shows 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.
Table C- 3 DB-9 – RJ-45 crossover adapter pinout
DB-9 Pin Signal RJ-45 Pin
1DCD 1
2RXD 3
3TXD 2
4DTR 6
5GND 5
6DSR 4
7RTS 8
8CTS 7
9RNG n/c
Table C- 4 DB-9 – RJ-45 straight-through adapter pinout
DB-9 Pin RS-232 Signal Name RJ-45 Pin Ethernet Signal Name
1DCD 1TX +
2RXD 2TX –
3TXD 3RX +
4DTR 4n/c
5GND (signal) 5n/c
6DSR 6RX –
7RTS 7n/c
8CTS 8n/c
9RNG n/c none