public static int Global_OnComm(int Com, long EventCode) {

        String s = "OnComm - Event: 0x"  + Long.toHexString(EventCode);

        if (SuperCom.IsBitSet(EventCode, SuperCom.EV_RXCHAR)) {
            s = s + ", EV_RXCHAR";
        }
        if (SuperCom.IsBitSet(EventCode, SuperCom.EV_TXEMPTY)) {
            s = s + ", EV_TXEMPTY";
        }
        if (SuperCom.IsBitSet(EventCode, SuperCom.EV_RXFLAG)) {
            s = s + ", EV_RXFLAG";
        }
        if (SuperCom.IsBitSet(EventCode, SuperCom.EV_TRIGGER)) {
            s = s + ", EV_TRIGGER";
        }
        if (SuperCom.IsBitSet(EventCode, SuperCom.EV_RI)) {
            s = s + ", EV_RI"; // ringing?
        }
        if (SuperCom.IsBitSet(EventCode, SuperCom.EV_DCD)) {
            s = s + ", EV_DCD"; // connected
        }
        if (SuperCom.IsBitSet(EventCode, SuperCom.EV_DSR)) {
            s = s + ", EV_DSR";
        }
        if (SuperCom.IsBitSet(EventCode, SuperCom.EV_CTS)) {
            s = s + ", EV_DSR";
        }

        // : And many many more bits may be set,
        //   Handle what expected only and ignore rest


        System.out.format("COM_%d)%s\n",(Com+1),s);
        return 0;
    }

    // Collect complete data packets in background.
    public static int Global_OnDataPacket(int Com, short Action, byte[] Data)
    {
        int res = 0;
        String s = "OnDataPacket Event:";

        switch (Action) {
            case SuperCom.SCOMM_DATAPACKET_OK:
                s+=", OK [";
                s+=SuperCom.ByteArrayToString(Data);
                 s+="]";
                break;
            case SuperCom.SCOMM_DATAPACKET_NOK:
                s+=", got partially data packet [";
                s+=SuperCom.ByteArrayToHexString(Data);
                s+="]";
                break;
        }
        System.out.format("COM_%d)%s\n",(Com+1),s);
        return res;
    }

    public static int Global_OnConnect(int Com, short Action, int TimeLeft) {

        int res = SuperCom.infCONTINUE;

        String s="OnConnect-Event: " + Action;

        if (Action == SuperCom.acCONNECT_INFO) {
           s = s + ", INFO";
        } else if (Action == SuperCom.acCONNECT_INIT) {
           s = s + ", INIT";
        } else if (Action == SuperCom.acCONNECT_DIALING) {
           s = s + ", acCONNECT_DIALING";
        } else  if (Action == SuperCom.acCONNECT_CONNECTING) {
           s = s + ", CONNECTING";
        } else if (Action == SuperCom.acCONNECT_OK) {
           s = s + ", CONNECTED!";
        }else if (Action == SuperCom.acCONNECT_FAILED) {
           s = s + ", Failed!";
        }

        System.out.format("COM_%d)%s\n",(Com+1),s);

        return res;
     }

    public static int Global_OnFile(int Com, short Action, long Data, SuperCom.PFILEINFOPROC.TFDATA FileData) {
        int res = SuperCom.infCONTINUE;

        String s = "OnFile Event: ";

        switch (Action) {
            case SuperCom.acFILEDATA:
                s = s + "acFILEDATA, ";
                s = s + SuperCom.ZeroTerminatedByteArrayToString(FileData.FileName);
                s = s + ", Filesize=" + FileData.FileSize;
                s = s + ", Date=" + FileData.FileDate.Year + "-" + FileData.FileDate.Month + "-" + FileData.FileDate.Day;
                s = s + ", Time=" + FileData.FileDate.Hour + ":" + FileData.FileDate.Min + ":" + FileData.FileDate.Sec;
                break;
            case SuperCom.acFILENAME: // receiver filename,
                s = s + "acFILENAME"; // add / change 'DownloadDir' etc.
                break;
            case SuperCom.acTXING:
                s = s + "acTXING, Data=";
                s = s + Data;
                break;
            case SuperCom.acRXING:
                s = s + "acRXING, Data=";
                s = s + Data;
                break;
            case SuperCom.acTXFIN:
                s = s + "acTXFIN, Data=" + (Data);
                break;
            case SuperCom.acRXFIN:
                s = s + "acRXFIN, Data=" + (Data);
                break;
            case SuperCom.acUSERBREAK:
                res = SuperCom.infBREAK;
                break;
                   :
                   :
        }

        System.out.format("COM_%d)%s\n",(Com+1),s);

        return res;
    }