device {
    my $isdn = db_get_prop($confref, 'isdn', 'status') || "disabled";
    if ($isdn eq "enabled")
    {
	my $sync = db_get_prop($confref, 'isdn', 'UseSyncPPP') || "yes";
	$OUT = ($sync eq "yes") ? "ippp0" : "$DialupModemDevice";
    }
    else
    {
	$OUT = "$DialupModemDevice";
    }
}
