11
GSM M1 Module, English: A24859-N4000-A100-1-7677
gsm-m1-e.fm
Installation / startup
6.3.96
Enter: AT&F Loads factory configuration.
GSM module OK
Enter: ATD<tel. no.> The dial command
M1 Dials the telephone number and informs
you when it is successful.
CONNECT xxxx "xxxx" is the baud rate for the
connection. The GSM module is now
operating in transparent mode, i.e. entries
you make via the keyboard are transmitted
to the distant end.
Pause
Enter: +++ Interrupt command:
Press the “+“ key three times in rapid
succession.
Pause
M1 returns: OK Changes to command mode.
Enter: ATH Command to go on-hook
M1 returns: OK The connection is cleared down; M1 has
gone on-hook.
For more information, see Technical reference sec7tion.
As long as the GSM module is still responding to commands, you can enter the AT&F0
command to load the factory configuration. In any case, this will permit further opera-
tion.
• Check whether the communication program is configured for the serial interface to
which the GSM module is connected.
• Check the parameters of your communication program. The following settings will
always work:
Transfer rate 2400 – 19200 baud
Data bits 8
Parity None
Stop bits 1
Duplex Full
Check whether other programs (e.g. printer spooler) are interfering with the function-
ing of the communication program. Restart your computer without additional pro-
grams, with the operating system alone (switch off and then on).
Troubleshooting
GSM module can still be accessed
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