Siemens XT65, TC65, AC65, XT75 manual Data Connections

Java User’s Guide

13.1 Using the AT Command API

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13.1.1.3Data Connections

If a data connection is created with the ATCommand class, for instance with ‘atd’, an input stream is opened to receive the data from the connection. Similarly, an output stream can be opened to send data on the connection.

/* Please note that this example would not work unless the module had * been initialized and logged into a network. */

System.out.println("Dialing: ATD" + CALLED_NO); response = atc.send("ATD" + CALLED_NO + "\r"); System.out.println("received: " + response);

if (response.indexOf("CONNECT") >= 0) { try {

//We have a data connection, now we do some streaming...

//IOException will be thrown if any of the Stream methods fail OutputStream dataOut = ATCmd.getDataOutputStream(); InputStream dataIn = ATCmd.getDataInputStream();

//out streaming...

dataOut.write(new String("\n\rHello world\n\r").getBytes()); dataOut.write(new String("\n\rThis data was sent by a Java " +

"MIDlet!\n\r").getBytes()); dataOut.write(new String("Press 'Q' to close the " +

"connection\n\r").getBytes());

// ...and in streaming

System.out.println("Waiting for incoming data, currently " + dataIn.available() + " bytes in buffer.");

rcv = 0;

while(((char)rcv != 'q') && ((char)rcv != 'Q') && (rcv != -1)){ rcv = dataIn.read();

if (rcv >= 0) { System.out.print((char)rcv);

}

}/* The example continues after the next block of text */

wm_java_usersguide_v12	Page 115 of 123	2008-02-25
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