insys icom GSM small 2.0 Manual page 32

Operating Principle
10 Operating Principle
This section describes the basic procedures to operate and configure a INSYS GSM
small 2.0.
There are several methods to operate and configure the INSYS GSM small 2.0. In
general, the INSYS GSM small 2.0 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. As an alternative, you can enter the most important
functions easily with the help of the configuration software HSComm.
10.1 Operation with the Terminal Program
In general, any terminal program may be used. We recommend the program
Teraterm from T.Teranishi. It is available free of cost on the Internet at
http://ttssh2.sourceforge.jp/.
Configuring and operating the INSYS GSM small 2.0 with a terminal program
How to configure and operate the INSYS GSM small 2.0 with a terminal
program.

The INSYS GSM small 2.0 is connected to the PC and switched on.

A terminal program is installed on the PC.
1. Start your terminal program.
2. Select the serial port, to which your INSYS GSM small 2.0 is con-
nected.

COM1 under Windows corresponds to /dev/ttyS0 under Linux.
Type the character string AT into the terminal program. Complete the
3.
entry by pressing the Enter key.

Each command input starts with AT and is completed with the Enter
key.

The INSYS GSM small 2.0 replies with OK.

If the modem does not response, there are sev
a) the INSYS GSM small 2.0 is powered off or
b) the INSYS GSM small 2.0 is connected to another serial port or
c) the settings of baud rate and/or protocol in INSYS GSM small 2.0
and terminal progr
and repeat step 3.
32
am do not match (standard: 115.200, 8N1). Check it
INSYS GSM small 2.0
eral probable reasons: