title: Android SIP stack - what to use?
body: <p>I need to create use an SIP stack on Android, which will work with asterix and will give users the possibility to change codecs (i need to implement G729 and some other codecs). I'm new in this field (voice and codec), and every bit of information will be appreciated. In my research across the Internet, I found the following SIP stacks:</p>
  
  <ol>
  <li><a href="http://www.pjsip.org" rel="noreferrer">PJSIP</a></li>
  <li><a href="http://www.mjsip.org" rel="noreferrer">MJSIP</a></li>
  <li><a href="http://java.net/projects/jain-sip/" rel="noreferrer">JAIN SIP</a></li>
  </ol>
  
  <p>What do you recommend to use for a commercial program? Or you can recommend some other? For my particular situation, it must support the G729 codec.</p>