Modem Adapter - Cisco 7609-S Installation Manual

Appendix B Connector and Cable Specifications

Modem Adapter

OL-5079-04
Table B-3 Port Mode 1 Signaling and Pinouts (DB-25 Adapter)
Console Port RJ-45-to-RJ-45 Rollover Cable
Signal RJ-45 Pin
1
RTS 1
DTR 2
TxD 3
GND 4
GND 5
RxD 6
DSR 7
1
CTS 8
1. Pin 1 is connected internally to Pin 8.
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.
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
Console Port Rollover Cable
Signal RJ-45 Pin
1
RTS 1
DTR 2
TxD 3
GND 4
GND 5
RJ-45-to-DB-25
Terminal
Adapter
RJ-45 Pin DB-25 Pin
8 5
7 6
6 3
5 7
4 7
3 2
2 20
1 4
RJ-45-to-DB-25
Modem Adapter
RJ-45 Pin DB-25 Pin
8 4
7 20
6 3
5 7
4 7
Cisco 7609 Internet Router Installation Guide
Cable Specifications
Console
Device
Signal
CTS
DSR
RxD
GND
GND
TxD
DTR
RTS
Table B-4 lists the
Modem
Signal
RTS
DTR
TxD
GND
GND
B-11