Auxiliary Port Signals And Pinouts - Cisco CISCO2515-RF - 2515 Router User Manual

Auxiliary Port Signals and Pinouts

Use the thin, flat, RJ-45-to-RJ-45 roll-over cable and RJ-45-to-DB-25 male DCE adapter
(labeled "MODEM") to connect the auxiliary port to a modem. Figure C-4 shows how to
connect the auxiliary port to a modem. Table C-3 lists the pinouts for the asynchronous
serial auxiliary port, the RJ-45-to-RJ-45 roll-over cable, and the RJ-45-to-DB-25 male
DCE adapter (labeled "MODEM").
Figure C-4
Router
Table C-3
Auxiliary
Port (DTE)
Signal
RTS
DTR
TxD
GND
GND
RxD
DSR
CTS
1. Pin 1 is connected internally to Pin 8.
Console and Auxiliary Port Signals and Pinouts
Connecting the Auxiliary Port to a Modem
RJ-45-to-RJ-45
rollover cable
Auxiliary Port Signaling and Cabling Using a DB-25 Adapter
RJ-45-to-RJ-45
Roll-Over Cable
RJ-45 Pin RJ-45 Pin
1
1 8
2 7
3 6
4 5
5 4
6 3
7 2
1
8 1
Modem
RJ-45-to-DB-25 adapter
(labeled Modem)
RJ-45-to-DB-25
Modem Adapter Modem
DB-25 Pin Signal
4 RTS
20 DTR
3 TxD
7 GND
7 GND
2 RxD
8 DCD
5 CTS
Cable Specifications C-5