<br><br><div><span class="gmail_quote">On 11/16/07, <b class="gmail_sendername">Jim Dalton</b> <<a href="mailto:jim.dalton@transnexus.com">jim.dalton@transnexus.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<br>> Thank you for publishing this; it's most useful to the<br>> Asterisk community. Did you make any measurements of voice<br>> quality (jitter, packet loss, subjective listening tests by a<br>> human) at high loads? From a brief read at your PDF document,
<br>> I didn't see anything on this - my apologies if I've missed it.<br>><br><br>Very good question and quick reading! This issue is not addressed in the<br>test plan.<br><br>To check for voice quality we performed subjective listening test at high
<br>loads and the quality was good.<br><br>We spent some time trying to think of a simple way to quantitatively measure<br>voice quality during the test, but could not come up with a practical<br>solution that was easy and affordable. We would appreciate any input on
<br>easy ways to collect voice quality data.</blockquote><div><br><br>I asked a similar question, not observing this one. I would suggest some monitoring tools that will give you an indication of jitter, loss, delay, etc. There are many things that will do this, although they all have different good/bd qualities. I believe wireshark will, there are other tools dedicated to RTP traffic analysis.
<br></div><br><a href="http://www.voip-info.org/wiki/index.php?page=How+to+debug+and+troubleshoot+VoIP">http://www.voip-info.org/wiki/index.php?page=How+to+debug+and+troubleshoot+VoIP</a><br>has some links to tools that claim to do this.
<br></div>-- <br>Trixter <a href="http://www.0xdecafbad.com">http://www.0xdecafbad.com</a> Bret McDanel<br>Belfast +44 28 9099 6461 US +1 516 687 5200<br><a href="http://www.trxtel.com">http://www.trxtel.com</a>
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