<page xmlns="http://projectmallard.org/1.0/"
      xmlns:e="http://projectmallard.org/experimental/"
      type="guide"
      id="usage-ussd">

  <info>
    <link type="guide" xref="index#usage"/>
    <revision pkgversion="0.0.17" version="0.1" date="2014-01-05" status="incomplete"/>
    <desc>
      Use <app>Modem Manager GUI</app> for send USSD codes and receive the answers.
    </desc>
    <credit type="author">
      <name>Mario Blättermann</name>
      <email>mario.blaettermann@gmail.com</email>
    </credit>
    <license>
      <p>Creative Commons Share Alike 3.0</p>
    </license>
  </info>

   <title>USSD codes</title>
   <p><app>Modem Manager GUI</app> is able to send USSD codes. These codes are controlling
     some network functions, for example the visibility of your phone number when sending a SMS.</p>
   
   <p>To use the USSD functions, click on the <gui style="button">USSD</gui> button
     in the toolbar.</p>
   
   <p>In the text entry on top of the window, the code <cmd>*100#</cmd> is already displayed.
   This code is the usual one for requesting the balance for a prepaid card. If you like
   to send another code, click on the <gui style="button">Edit</gui> button on the right</p>.
   
   <note style="hint">
     <p>USSD codes are only available in networks which use the
     <link href="http://en.wikipedia.org/wiki/3rd_Generation_Partnership_Project">3GPP standards
     </link>.</p>
   </note>
   
   <p>You can use such codes for many purposes.</p> 
      
      
</page>
