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Thread: Serail Port Programming regarding phone line hook

  1. #1
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    Thumbs up Serail Port Programming regarding phone line hook

    Hello everyone,

    I am just trying my hands in Serial port programming using javax.comm package.

    I am sorry if I will not be able to explain you my scenario but I will try my best to explain my problem.

    I have 56k internal modem connected to my computer and its assigned with COM 6. Telephone is connected to the modem. I want to write a simple application which will hook the telephone after 2 ring and receive the message which is sent through the telephone line.

    I found few example in the internet but those examples cant hook the telephone. On the output screen it will only display as:

    RING

    RING

    RING

    RING

    On the another end, I have device which will dial to the phone number connected to my computer modem. What My device will expect is, my program needs to hook the call after 2 ring then it will send some message to my program.My program needs to hook the call after 2 ring and need to receive the message comming from device after 2 ring.

    One of the example is;

    import java.io.*;
    import java.util.*;
    import javax.comm.*;
     
    public class SimpleRead implements Runnable, SerialPortEventListener {
        static CommPortIdentifier portId;
        static Enumeration portList;
     
        static OutputStream outputStream;
    	static InputStream inputStream;
    	FileInputStream fis = null;
        SerialPort serialPort;
        Thread readThread;
    	int ch;
     
        public static void main(String[] args) {
            portList = CommPortIdentifier.getPortIdentifiers();
     
            while (portList.hasMoreElements()) {
                portId = (CommPortIdentifier) portList.nextElement();
                if (portId.getPortType() == CommPortIdentifier.PORT_SERIAL) {
                     if (portId.getName().equals("COM6")) {
    					 System.out.println("checked");
    			//                if (portId.getName().equals("/dev/term/a")) {
                        SimpleRead reader = new SimpleRead();
                    }
                }
            }
        }
     
        public SimpleRead() {
            try {
                serialPort = (SerialPort) portId.open("SimpleReadApp", 2000);
            } catch (PortInUseException e) {System.out.println(e);}
            try {
                inputStream = serialPort.getInputStream();
            } catch (IOException e) {System.out.println(e);}
    	try {
                serialPort.addEventListener(this);
    	} catch (TooManyListenersException e) {System.out.println(e);}
    				serialPort.notifyOnDataAvailable(true);
    				serialPort.notifyOnCarrierDetect(true);
    				serialPort.notifyOnDataAvailable(true);
    				serialPort.notifyOnBreakInterrupt(true);
    				serialPort.notifyOnCTS(true);
    				serialPort.notifyOnDSR(true);
    				serialPort.notifyOnFramingError(true);
    				serialPort.notifyOnOutputEmpty(true);
    				serialPort.notifyOnOverrunError(true);
    				serialPort.notifyOnParityError(true);
    				serialPort.notifyOnRingIndicator(true);
            try {
                serialPort.setSerialPortParams(9600,SerialPort.DATABITS_8,SerialPort.STOPBITS_1,SerialPort.PARITY_NONE);
            } catch (UnsupportedCommOperationException e) {System.out.println(e);}
            readThread = new Thread(this);
            readThread.start();
        }
     
        public void run() {
            try {
                Thread.sleep(2000);
            } catch (InterruptedException e) {System.out.println(e);}
        }
     
        public void serialEvent(SerialPortEvent event) {
            switch(event.getEventType()) {
            case SerialPortEvent.BI:
     
    			System.out.println("Break Interrupt");
    				break;
            case SerialPortEvent.OE:
            case SerialPortEvent.FE:
            case SerialPortEvent.PE:
     
            case SerialPortEvent.CTS:
     
            case SerialPortEvent.DSR:
            case SerialPortEvent.RI:
     
     
     
    			System.out.println("Pick up the receiver.");
    				if( event.getNewValue() ) 
    				{
    					System.out.println("Ring Indicator On");
    				}
    				else 
    				{
    					System.out.println("Ring Indicator Off");
    				}
    				break;
    		case SerialPortEvent.CD:
     
    			if( event.getNewValue() ) 
    				{
    					System.out.println("Connected");
     
    				}
    				else 
    				{
    					System.out.println("Disconnected");
    					System.exit(0);
    				}
    				break;
     
            case SerialPortEvent.OUTPUT_BUFFER_EMPTY:
                break;
            case SerialPortEvent.DATA_AVAILABLE:
    			 try {
    	//		outputStream.write("ata".getBytes());
                byte[] readBuffer = new byte[5048];
     
     
                    while (inputStream.available() > 0) {
    		//			outputStream.write("ata".getBytes());	// to hook the phone
    		//			System.out.println("ram");
                        int numBytes = inputStream.read(readBuffer);
                    }
     
                    System.out.print(new String(readBuffer));
    				outputStream.write("ata".getBytes());
     
                } catch (IOException e) {System.out.println(e);}
                break;
            }
        }
    }

    It would be very helpful if anyone can help me in this issue.
    Thanks in advance.
    Last edited by Freaky Chris; September 2nd, 2009 at 07:52 AM. Reason: Added code tags


  2. #2
    mmm.. coffee JavaPF's Avatar
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    Default Re: Serail Port Programming regarding phone line hook

    Hello maskey_dipesh.

    Welcome to the Java Programming Forums.

    I have no experience with serial port programming. Hopefully someone else can help you soon.

    JAVA: Serial Port access with javax.comm or rxtx on Windows, Linux etc.
    Please use [highlight=Java] code [/highlight] tags when posting your code.
    Forum Tip: Add to peoples reputation by clicking the button on their useful posts.

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  3. #3
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    Default Re: Serail Port Programming regarding phone line hook

    Dear JavaPF,
    Thank for your information
    I am still waiting response from others. Hope somebody can help me.

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