title: pppd connection with GSM/GPRS modem, re-dialing after a few times
body: <p>I'm currently connecting my GSM/GPRS modem HUAWEI e1550 to my ISP's network. I'm able to get it connected, but after disconnecting and connecting a few times I'm not able to do it anymore, and my modem starts not to answer, and I don't no why!</p>
  
  <p>I connect through pppd call tmn-3g &lt;- my ISP conf ppp file
  This is my /etc/ppp/chat file:</p>
  
  <pre><code>ABORT BUSY
  ABORT 'NO CARRIER'
  ABORT ERROR
  REPORT CONNECT
  TIMEOUT 10
  "" "ATZ"
  OK "AT&amp;F"
  OK 'AT+CGDCONT=1,"IP","internet"'
  SAY "Calling...\n"
  TIMEOUT 120
  OK "ATD*99***1#"
  CONNECT \c
  </code></pre>
  
  <p>And here is my /etc/ppp/peers/tmn-3g</p>
  
  <pre><code>/dev/ttyUSB0  
  460800
  lock
  crtscts
  modem
  noauth
  defaultroute
  user tmn 
  password tmn 
  connect "/usr/sbin/chat -V -f /etc/ppp/chat-tmn-3g"
  noipdefault
  usepeerdns
  nobsdcomp
  novj
  </code></pre>
  
  <p>Can you help me with this?</p>
  
  <p>Is it possible to restart my usb ports so that I can restart all the process?I though this could be a solution..</p>
  
  <p>Or is there any other way to do it?</p>
  
  <p>tks in advance..</p>