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Connecting to the serial ports, Table 4.4 – Motorola CAJUN P120 User Manual

Page 37

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Chapter 4

Installation and Setup

Cajun P120 User’s Guide

23

Connecting to the Serial Ports

The Cajun P120 has two serial ports – one on the front panel for connecting a PC or
terminal, and one on the back panel of the unit for connecting a modem.

The RJ-45 port on the front panel of the Cajun P120, labeled Console, may be used
for configuration of the switch using the built-in Command Line Interface (CLI,
Terminal Emulation). The SLIP serial port, on the back panel of the Cajun P120,
may be used for out-of-band SNMP management, Telnet or a TFTP server.

Their settings are as follows

Baud Rate - 9600 bps

Character Size - 8

Parity - None

Stop Bit - 1

Flow Control - None

The terminal connected to the serial port must be configured with the same
settings; this setting should work with any PC COM port over a DB-9 to RJ-45
connector.

* The above pinout reflects the functionality of the signals, as seen from the

Cajun P120.

Table 4.4

Pinout of the Serial Interface (RJ-45) and the Connection to SLIP Modem (D9)

RJ-45 PINS (front connector)

D9 PINS (back connector)

1 – NC

1 – CDB

2 – RXDA

2 – RXDB

3 – TXDA

3 – TXDB

4 – CDA

4 – DTRB/REQB

5 – GND

5 – GND

6 – DTRA/REQA

6 – NC

7 – RTSA

7 – RTSB

8 – CTSA

8 – CTSB

9 – NC