Java MTCBA-G-EN-F4

[James Lewis]

Hello,

I am trying to write a java program to connect to a MTCBA-G-EN-F4 however when connecting I only receive the following characters from the device

65533,65533,65533,24,65533,32,65533,65533

Any attempt at further communication fails. Please see my code below.

I have no issues when using telnet through putty successfully sending text messages.

Any help is much appreciated

package smscommunicator;

import ProcessSystems.global.PSGlobal;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.SocketTimeoutException;

/**
*
* @author lewisj
*/
public class MultiTechModem {

private final String ipAddress;
private final int port;

private Socket smsSock;
private BufferedReader dataIn;
private BufferedWriter dataOut;

private boolean connected;

public MultiTechModem(String anIpAddress, int aPort)
{
ipAddress = anIpAddress;
port = aPort;

connected = false;
}

public void sendMessage(SMSMessage aMessage)
{
try
{
connectToModem();

dataOut.write(“at+cmgs=123456789\r\n”);
dataOut.flush();
dataOut.write(“This is a test026”);
dataOut.flush();

String str = dataIn.readLine();

System.out.println(“Got data “+str);
}
catch(IOException e)
{
//If we have timed out don’t reset the connection as theres nothing wrong with it
if(!e.getMessage().toUpperCase().contains(“READ TIMED OUT”))
{
PSGlobal.errorOut(“Unable to get information from device “+ipAddress+”/”+port+” “+e.getMessage());
}

resetConnection();
}
}

private void connectToModem()
{
while(!connected)
{
try
{
smsSock = new Socket();
smsSock.connect(new InetSocketAddress(ipAddress,port),10000);
smsSock.setSoTimeout(10000);

dataIn = new BufferedReader(new InputStreamReader(smsSock.getInputStream()));
dataOut = new BufferedWriter(new OutputStreamWriter(smsSock.getOutputStream()));

connected = true;

}
catch(SocketTimeoutException e)
{
PSGlobal.diagOut(“Timeout occured “+ipAddress+”/”+port);
resetConnection();
}
catch(IOException e)
{
PSGlobal.errorOut(“connect to device failure “+ipAddress+”/”+port+” “+e.getMessage());
resetConnection();
}
}
}

private void resetConnection()
{
//Close the data reader
if(dataIn != null)
{
try
{
dataIn.close();
}
catch(IOException e)
{
PSGlobal.errorOut(“Unable to close reader “+ipAddress+”/”+port+
” “+e.getMessage());
}
}

//Close the data writer
if(dataOut != null)
{
try
{
dataOut.close();
}
catch(IOException e)
{
PSGlobal.errorOut(“Unable to close the data writer “+ipAddress+”/”+port+
” “+e.getMessage());
}
}

//Close the writer
if(smsSock != null)
{
try
{
smsSock.close();
}
catch(IOException e)
{
PSGlobal.errorOut(“Unable to close socket “+ipAddress+”/”+port+
” “+e.getMessage());
}
}

connected=false;
}
}

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