Serial port programming using modem and telephone

[maskey_dipesh]

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.DAT ABITS_8,SerialPort.STOPBITS_1,SerialPort.PARITY_NO NE);
} 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.

[maskey_dipesh]

guys,
I am still waiting for the help.
can anybody suggest me please.