Cisco Systems 7609 Modem Adapter, RJ-45-to-DB-25 Terminal Console, RJ-45-to-RJ-45 RJ-45-to-DB-25

Appendix B Connector and Cable Specifications

Cable Specifications

Table B-3 Port Mode 1 Signaling and Pinouts (DB-25 Adapter)

			RJ-45-to-DB-25
			Terminal	Console
Console Port	RJ-45-to-RJ-45 Rollover Cable		Adapter	Device
Signal	RJ-45 Pin	RJ-45 Pin	DB-25 Pin	Signal
RTS	11	8	5	CTS
DTR	2	7	6	DSR
TxD	3	6	3	RxD
GND	4	5	7	GND
GND	5	4	7	GND
RxD	6	3	2	TxD
DSR	7	2	20	DTR
CTS	81	1	4	RTS

1. Pin 1 is connected internally to Pin 8.

Modem Adapter

Use the RJ-45-to-RJ-45 rollover cable and RJ-45-to-DB-25 male DCE adapter (labeled “Modem”) to connect the console port to a modem. Table B-4lists the pinouts for the asynchronous serial auxiliary port, the RJ-45-to-RJ-45 rollover cable, and the RJ-45-to-DB-25 male DCE adapter.

Table B-4 Port Mode 1 Signaling and Pinouts (Modem Adapter)

		RJ-45-to-RJ-45		RJ-45-to-DB-25
	Console Port	Rollover Cable		Modem Adapter	Modem
	Signal	RJ-45 Pin	RJ-45 Pin	DB-25 Pin	Signal
	RTS	11	8	4	RTS
	DTR	2	7	20	DTR
	TxD	3	6	3	TxD
	GND	4	5	7	GND
	GND	5	4	7	GND
			Cisco 7609 Internet Router Installation Guide
OL-5079-04						B-11