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Originally posted by hackedX99

So if com3 is the V.92 modem then can I record phone messages from the V.92 modem

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Originally posted by hackedX99

And I believe their is an AT command for the call id stuff as well :)

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Originally posted by hackedX99

Curious to know though what devices can use the comX ports. I am assuming not all of them. Like could you set the harddrive to read and write from it with a com port? How about reading/writing to the The screen image i.e being able to capture/record your computer screen image. <-- I have try this with the VFW it worked OK but it was such a pain in the ass to code to get memory mapped data ...etc

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Originally posted by hackedX99

Null Modem , I thought this was just direct connection to 2 computers thru their serial port connector in the back.
And you could either write a progam to send/recive data from on to the other (like Transmitter/reciver program ) or use HyperTerminal ,...etc

Kind of like using a crossover cable to directly connect computers but instead using a cord that has serial connector on each side.

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Not all devices are serial devices, not all serial devices can be invoked like RS-232 devices. Nuff said.

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Remember, not all modems have the same command set.

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Not that simple.

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Commands nearly every modem recognizes:

ATs0 = # - # of rings to auto-answer after; if 0, disable auto-answer
AT A = Answer call
AT D = Dial
AT E# = Echo characters in command mode - where # = 0-no echo; 1=echo
AT H = Hangup
AT M# = Modem speaker: # = 0 - speaker off; 1 - speaker on during handshake; 2 - speaker always on
AT O = Go online
AT X# = Result codes / blind dialing - # = 0 or 1 to disable speed reporting, dial-tone detect, etc.
AT Z = reset modem
AT &F = reset modem to factory defaults
AT s6 = # - # of seconds modem waits before dialing after going off-hook
AT s7 = # - # of seconds modem waits for carrier after dialing
AT s10 = # - Durations in 1/10th second modem waits before hang-up after loss of carrier
AT s11 = # - Duration in milliseconds of tone dialing
AT s2 = ### - ASCII escape code character - defaults to 43 which is the plus sign ( + )
AT s12 = ### - Duration, in 50ths of a second, of guard time for escape code sequence (default = 50)

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Originally posted by hackedX99

I guess then the question here would be are the comX ports just for RS-232 based serial devices?

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Originally posted by hackedX99

If so can any RS-232 based serial device be used thru a comX port?

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Originally posted by hackedX99

Still curious why their is 256 = 2^8 number of com ports avalible is their some restriction on having only 256 com devices in a computer?

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Originally posted by hackedX99

I still think their is a destintion between somebody saying serial ports (me automatically think of the one or two serial ports on the back of the computer) and com ports ( communication ports which can be serial or more general and only are used to get a handle to the input/output device )?

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Originally posted by hackedX99

Well I am going to give it a try.

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Originally posted by hackedX99

Thanks duald always a pleasure talking to the elite.

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Is this what you're trying to accomplish?

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package CommPort;   
  
import javax.comm.*;   
  
import java.io.FileDescriptor;   
import java.io.IOException;   
import java.io.InputStream;   
import java.io.OutputStream;   
  
public class TwoWaySerialComm   
{   
    public TwoWaySerialComm()   
    {   
        super();   
    }   
       
    void connect ( String portName ) throws Exception   
    {   
        CommPortIdentifier portIdentifier = CommPortIdentifier.getPortIdentifier(portName);   
        if ( portIdentifier.isCurrentlyOwned() )   
        {   
            System.out.println("Error: Port is currently in use");   
        }   
        else  
        {   
            CommPort commPort = portIdentifier.open(this.getClass().getName(),2000);   
               
            if ( commPort instanceof SerialPort )   
            {   
                SerialPort serialPort = (SerialPort) commPort;   
                serialPort.setSerialPortParams(57600,SerialPort.DATABITS_8,SerialPort.STOPBITS_1,SerialPort.PARITY_NONE);   
                   
                InputStream in = serialPort.getInputStream();   
                OutputStream out = serialPort.getOutputStream();   
                   
                (new Thread(new SerialReader(in))).start();   
                (new Thread(new SerialWriter(out))).start();   
  
            }   
            else  
            {   
                System.out.println("Error: Only serial ports are handled by this example.");   
            }   
        }        
    }   
       
    /** */  
    public static class SerialReader implements Runnable    
    {   
        InputStream in;   
           
        public SerialReader ( InputStream in )   
        {   
            this.in = in;   
        }   
           
        public void run ()   
        {   
            byte[] buffer = new byte[1024];   
            int len = -1;   
            try  
            {   
                while ( ( len = this.in.read(buffer)) > -1 )   
                {   
                    System.out.print(new String(buffer,0,len));   
                }   
            }   
            catch ( IOException e )   
            {   
                e.printStackTrace();   
            }               
        }   
    }   
  
    /** */  
    public static class SerialWriter implements Runnable    
    {   
        OutputStream out;   
           
        public SerialWriter ( OutputStream out )   
        {   
            this.out = out;   
        }   
           
        public void run ()   
        {   
            try  
            {                   
                int c = 0;   
                while ( ( c = System.in.read()) > -1 )   
                {   
                    this.out.write(c);   
                }                   
            }   
            catch ( IOException e )   
            {   
                e.printStackTrace();   
            }               
        }   
    }   
       
    public static void main ( String[] args )   
    {   
        try  
        {   
            (new TwoWaySerialComm()).connect("COM3");   
        }   
        catch ( Exception e )   
        {   
            // TODO Auto-generated catch block   
            e.printStackTrace();   
        }   
    }   
}