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    The professional way is to do a series of test calls, play a
    reference file and record the audio at the incoming side. You then
    use both files to calculate a MOS score. This method is used by
    telco's to do quality checks.<br>
    <a class="moz-txt-link-freetext" href="https://secure.wikimedia.org/wikipedia/en/wiki/Mean_opinion_score">https://secure.wikimedia.org/wikipedia/en/wiki/Mean_opinion_score</a><br>
    <a class="moz-txt-link-freetext" href="http://voip.about.com/od/voipbasics/a/MOS.htm">http://voip.about.com/od/voipbasics/a/MOS.htm</a><br>
    <br>
    Bert<br>
    <br>
    On 08/10/2010 11:12, Sevana Oy wrote:
    <blockquote cite="mid:AB0C31F0EB0B45F488E5642324DD07E1@laptop"
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      <div><font size="2" face="Verdana">Hi,</font></div>
      <div>š</div>
      <div><font size="2" face="Verdana">How do you typically test voice
          quality in Asterisk? For example if you like to do load
          testing, or monitor voice quality and get notified if certain
          calls had bad quality for proactive maintenance?</font></div>
      <div>š</div>
      <div><font size="2" face="Verdana">Thank you!</font></div>
      <div>š</div>
      <div><font size="2" face="Verdana">Best Regards,</font></div>
      <div><font size="2" face="Verdana">Sevana Oy</font></div>
      <div><font size="2" face="Verdana"><a moz-do-not-send="true"
            href="">http://www.sevana.fi</a></font></div>
    </blockquote>
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