C-4
Cisco AS5400 Universal Gateway Chassis Installation Guide
OL-2847-02 0A
Appendix C Cabling Specifications
Ethernet Port Pinouts
Auxiliary Port Signals and Pinouts
Use the RJ-45-to-RJ-45 rollover 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 rollover cable,
and the RJ-45-to-DB-25 male DCE adapter (labeled MODEM).
Figure C-4
Connecting the Auxiliary Port to a Modem
Ethernet Port Pinouts
Table C-4
lists the pinouts for the Ethernet ports.
Table C-3
Auxiliary Port Signaling and Cabling Using a DB-25 Adapter
AUX Port
(DTE)
RJ-45-to-RJ-45
Rollover Cable
RJ-45-to-DB-25
Modem Adapter
Modem
Signal
RJ-45 Pin
RJ-45 Pin
DB-25 Pin
Signal
RTS
1
8
4
RTS
DTR
2
7
20
DTR
TxD
3
6
3
TxD
GND
4
5
7
GND
GND
5
4
7
GND
RxD
6
3
2
RxD
DSR
7
2
8
DCD
CTS
8
1
5
CTS
RJ-45-to-RJ-45
rollover cable
RJ-45-to-DB-25 adapter
(labeled MODEM)
Modem
37211
Universal gateway
Table C-4
10/100BASE-T Port Pinouts
RJ-45 Pin
Description
1
TXD+
2
TXD–
3
RXD+
4
–
5
–
6
RXD–
7
–
8
–
