Operating Principle
i-modul Modem 144/56k
5
Operating Principle
This chapter describes the basic procedures to operate and configure an
i-modul
Modem 144/56k 3.0 basic. In general, the i-modul Modem 144/56k 3.0 basic is
configured and operated via AT commands. You can enter these commands
yourself with the help of a terminal program and the AT command reference.
5.1
Operation with the Terminal Program
In general, any terminal program can be used. We recommend the program
TeraTerm by T. Teranishi under Windows. It is available free of cost on the
Internet at http://hp.vector.co.jp/authors/VA002416/teraterm.html. You can
use the program "minicom" if you work in a Linux environment.
Caution!
Damage of the serial interface!
A possible direct connection of the serial interface of the i-
modul Modem 144/56k 3.0 basic with a typical RS232
interface of a PC overloads components of the module due
to the higher voltage levels.
Use an RS232 level converter (e.g. MAX232) to adjust both
interface types correctly.
Configuring and operating the i-modul Modem 144/56k 3.0 basic with a terminal
program
How to configure and operate the i-modul Modem 144/56k 3.0 basic with a
terminal program.
The i-modul Modem 144/56k 3.0 basic is connected to the PC and supplied
with power.
A terminal program is installed on the PC.
1.
Start your terminal program.
2.
Select the serial port, to which your i-modul Modem 144/56k 3.0
basic is connected.
COM1 under Windows corresponds to /dev/ttyS0 under Linux.
3.
Type the character string
AT
into the terminal program. Complete the
entry by pressing the Enter key.
Each command input starts with
AT
and is completed with the Enter
key.
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