title: Verify if a modem supports caller-id or not
body: <p>I want to Know my modem support caller-id and show number or not 
  I use this AT-command:</p>
  
  <pre><code> AT+FCLASS=?
  </code></pre>
  
  <p>I know if that response contains 8 support voice but if modem dosnt support voice it means cant support caller-id too?
  I use Conexant USB CX93010 ACF Modem</p>