<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /></head><body style='font-size: 12pt; font-family: "Times New Roman",Times,serif'> <p>Hi,</p> <p>How are you?</p> <p> i am using rxtx lib to connect to my modem ttyUSB0, but when i send command AT, no response is received!</p> <p>i am following this <a href="https://fazecast.github.io/jSerialComm/">https://fazecast.github.io/jSerialComm/</a> correctly!</p> <p>I need your Help!</p> <p>Thanks</p> <div id="signature">-- <br /> <div class="pre" style="margin: 0; padding: 0; font-family: monospace">Jean Bonkoungou<br />Java Certified <br />Java Architect</div> <div class="pre" style="margin: 0; padding: 0; font-family: monospace"><em>CEO de 3MI</em><br /><strong><em>SMPP / USSD / VAS / AIR / IN / HLR / SMSC / MSC</em></strong><br /><span style="text-decoration: underline;"><strong>Tel</strong></span>:226 78 378417/226 76 83 76 04</div> <div class="pre" style="margin: 0; padding: 0; font-family: monospace"><strong><span style="font-size: 10.0pt; font-family: 'Courier New';">Ancien Etudiant du Maroc (FSTE Errachidia, Genie Logiciel)</span></strong><br /><span style="text-decoration: underline;"><strong>skype</strong></span>:support3mi / jeanhigher</div> </div> </body></html>