Installing the ARN
114200-E Rev 00
1-27
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.
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
provides the default settings for both types of back-panel modem
interfaces.
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.
Table 1-4.
Console Modem Defaults
Modem Signal/Parameter
Default Value
Clear To Send (CTS)
On
Data Terminal Ready (DTR)
Set to answer all incoming calls.
Data Carrier Detect (DCD) or
Received Line Signal Detection
(RLSD)
On while carrier is present (the ARN uses DCD to
detect modem connect and disconnect).
Data Set Ready (DSR)
On
Ready to Send (RTS)
Ignored
Synchronous/Asynchronous Mode
Asynchronous
AutoAnswer
Answer on 2 rings with DTR active.
Local Character Echo
Off
Supervisory Functions
Off
Baud Rate
9600
Data Bits
8
Stop Bits
1
Parity
None
