'OK' 'AT{
(defined $ModemInit) ? "$ModemInit" : 
    ($DebugPPP && $DebugPPP eq 'yes') ? "L1M1" : "L0M0" }'{
    $OUT = "";
    if ($DialupModemDevice eq "/dev/ttyI0")
    {
	# we are using an internal ISDN card
	my $msn = $isdn{'Msn'} || "";
	my $blocksize = $isdn{'Blocksize'} || "512";
	# Configure HDLC as level 2 protocol
	# Configure MSN
	# Configure Blocksize
	$OUT .= "\n'OK' 'ATS14=3&E$msn&B$blocksize'";
    }
}
