view release on metacpan or  search on metacpan

lib/Device/Gsm.pm  view on Meta::CPAN

=head1 TROUBLESHOOTING

If you experience problems, please double check:

=over 4

=item Device permissions

Maybe you don't have necessary permissions to access your serial,
irda or bluetooth port device. Try executing your script as root, or
try, if you don't mind, C<chmod a+rw /dev/ttyS1> (or whatever device
you use instead of C</dev/ttyS1>).

=item Connection speed

Try switching C<baudrate> parameter from 19200 (the default value)
to 9600 or viceversa. This one is the responsible of 80% of the problems,
because there is no baudrate auto-detection.

=item Device autoscan