NAME

Device::Modem - Perl extension to talk to modem devices connected via serial port

WARNING

This is B<BETA> software, still needs extensive testing and
support for generic AT commands, so use it at your own risk,
and without B<ANY> warranty! Have fun.

SYNOPSIS

use Device::Modem;

my $modem = new Device::Modem( port => '/dev/ttyS1' );

if( $modem->connect( baudrate => 9600 ) ) {
    print "connected!\n";
} else {
    print "sorry, no connection with serial port!\n";
}

$modem->attention();          # send `attention' sequence (+++)

$modem->dial('02270469012');  # dial phone number
$modem->dial(3);              # 1-digit parameter = dial number stored in memory 3

$modem->echo(1);              # enable local echo (0 to disable)

$modem->offhook();            # Take off hook (ready to dial)
$modem->hangup();             # returns modem answer

$modem->is_active();          # Tests whether modem device is active or not
                              # So far it works for modem OFF/ modem ON condition

$modem->reset();              # hangup + attention + restore setting 0 (Z0)

$modem->restore_factory_settings();  # Handle with care!
$modem->restore_factory_settings(1); # Same with preset profile 1 (can be 0 or 1)

$modem->send_init_string();   # Send initialization string
                              # Now this is fixed to 'AT H0 Z S7=45 S0=0 Q0 V1 E0 &C0 X4'

# Get/Set value of S1 register
my $S1 = $modem->S_register(1);
my $S1 = $modem->S_register(1, 55); # Don't do that if you definitely don't know!

# Get status of managed signals (CTS, DSR, RLSD, RING)
my %signal = $modem->status();
if( $signal{DSR} ) { print "Data Set Ready signal active!\n"; }

# Stores this number in modem memory number 3
$modem->store_number(3, '01005552817');

$modem->repeat();             # Repeat last command

$modem->verbose(1);           # Normal text responses (0=numeric codes)

# Some raw AT commands
$modem->atsend( 'ATH0' );
print $modem->answer();

$modem->atsend( 'ATDT01234567' . Device::Modem::CR );
print $modem->answer();

DESCRIPTION

Device::Modem class implements basic AT (Hayes) compliant device abstraction. It is meant to be inherited by sub classes (as Device::Gsm), which are based on serial connections.

In the `examples' directory, there are some scripts that should work without big problems, that you can take as (yea) examples:

`examples/active.pl'

Tests if modem is alive

`examples/dial.pl'

Dials a phone number and display result of call

`examples/shell.pl'

(Very) poor man's minicom/hyperterminal utility

REQUIRES

Device::SerialPort (Win32::SerialPort for Windows machines)

EXPORT

None

TO-DO

• AutoScan

  An AT command script with all interesting commands is run when `autoscan' is invoked, creating a `profile' of the current device, with list of supported commands, and database of brand/model-specific commands

• Many more to come!

AUTHOR

Cosimo Streppone, cosimo@cpan.org

COPYRIGHT

(C) 2002 Cosimo Streppone, cosimo@cpan.org

This library is free software; you can only redistribute it and/or modify it under the same terms as Perl itself.

SEE ALSO

Device::SerialPort, Device::Gsm, Win32::SerialPort, perl