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Connecting a Console Modem
A modem provides a system administrator with remote access to the ARN. It is a
good idea to connect a modem in case the ARN experiences system problems.
Note: To use the Netboot, Directed Netboot, or Local Boot software
configuration options, you must connect a console the first time you power up
the ARN. Refer to Chapter 2, "Starting the ARN" for details.
To use a modem connection for a management console, you can connect an
external modem to the modem interface or you can connect a telephone line
directly to an optional V.34 Console Modem adapter module. Both ports are on
the ARN back panel.
Table 1-4
interfaces.
Table 1-4.
Modem Signal/Parameter
Clear To Send (CTS)
Data Terminal Ready (DTR)
Data Carrier Detect (DCD) or
Received Line Signal Detection
(RLSD)
Data Set Ready (DSR)
Ready to Send (RTS)
Synchronous/Asynchronous Mode
AutoAnswer
Local Character Echo
Supervisory Functions
Baud Rate
Data Bits
Stop Bits
Parity
114200-E Rev 00
provides the default settings for both types of back-panel modem
Console Modem Defaults
Default Value
On
Set to answer all incoming calls.
On while carrier is present (the ARN uses DCD to
detect modem connect and disconnect).
On
Ignored
Asynchronous
Answer on 2 rings with DTR active.
Off
Off
9600
8
1
None
Installing the ARN
1-27
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