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60
4-5 Device Settings Menu Options
Serial Port
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The RIPM Serial Settings allow you to specify which device is connected to the
serial port and how to use it. To access the serial interface, a null modem cable
is required.
1. Configuration or Console Login
Do not use the serial port for any special function; use it only for the
initial configuration.
2. Modem
The RIPM offers remote access using a telephone line in addition to standard
access over a built-in Ethernet adapter. The modem needs to be connected
to the serial interface of the RIPM. Connecting to the RIPM using a telephone
line means nothing other than building up a dedicated point-to-point
connection from your console computer to the RIPM. In other words, the
RIPM acts as an Internet Service Provider (ISP) into which you can dial. The
connection is established using the Point-to-Point Protocol (PPP). Before
you connect to the RIPM, make sure to configure your console computer
accordingly. For instance, on Windows-based operating systems, you can
configure a dial-up network connection that defaults to the correct settings
(like PPP). The Modem Settings panel allows you to configure the remote
access to the RIPM using a modem. The meaning of each parameter will be
described below. The modem settings are part of the Serial Settings panel.
3. Serial-Line Speed
The speed with which the RIPM is communicating with the modem. Most
modems available today will support the default value of 115.200bps. If you
are using an old modem and discovering problems, try to lower this speed.
4. Modem Init String
The initialization string used by the RIPM to initialize the modem. The default
value will work with all standard modems directly connected to a telephone
line. If you have a special modem, or if your modem is connected to a local
telephone switch that requires a special dial sequence in order to establish a
connection to the public telephone network, you can change this setting by
using a new string. Refer to the section in your modem’s manual about AT
command syntax.