Datasheet

Cabling Specifications for the Universal Access Server C-5
Console and Auxiliary Port Signals and 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
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
Access
server
H10571