Juniper Networks ERX-1410, ERX-1440, ERX-700 CT1 and CE1 I/O Modules, DB-9 Pin Signal RJ-45 Pin

C-4

APPENDIX C Cable Pinouts

Table C-3lists the pinout for the crossover adapter.

Table C-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/c

Table C-4lists the pinout for the straight-through adapter.

Table C-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/c
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

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-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.