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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

1 2 3 4 5 6 7 8 9 10 ... 23 24

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