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--></style></head><body bgcolor=white lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:Calibri'>Wow, what a great question ! </span><span style='font-size:11.0pt;font-family:Wingdings'>J</span><span style='font-size:11.0pt;font-family:Calibri'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:Calibri'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:Calibri'>May I try to understand your circumstances a bit more?<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:Calibri'><o:p> </o:p></span></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='font-size:11.0pt;font-family:Calibri'><span style='mso-list:Ignore'>1.<span style='font:7.0pt "Times New Roman"'>       </span></span></span><![endif]><span style='font-size:11.0pt;font-family:Calibri'>Are you measuring only narrowband calls e.g. G.729 or g.711 codecs (or even circuit switched only calls) – wideband calls (>3.5kHz) we should ensure the POLQA scale is being used<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='font-size:11.0pt;font-family:Calibri'><span style='mso-list:Ignore'>2.<span style='font:7.0pt "Times New Roman"'>       </span></span></span><![endif]><span style='font-size:11.0pt;font-family:Calibri'>Are you seeing PESQ range:  4.1 to 4.35 in the ABSENCE of packet loss or significant jitter? – if you have say >10-15% packet loss or more, you would expect “MOS” (however, it is measured) to drop way below 4.1<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='font-size:11.0pt;font-family:Calibri'><span style='mso-list:Ignore'>3.<span style='font:7.0pt "Times New Roman"'>       </span></span></span><![endif]><span style='font-size:11.0pt;font-family:Calibri'>If POLQA is relevant, we need to determine whether narrowband or wideband POLQA scale.<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='font-size:11.0pt;font-family:Calibri'><span style='mso-list:Ignore'>4.<span style='font:7.0pt "Times New Roman"'>       </span></span></span><![endif]><span style='font-size:11.0pt;font-family:Calibri'>What interfaces are you testing from, analog or digital (i.e. [SIP or H.323] VoIP endpoint ). Testing from analog interfaces into phone devices thru h/set is susceptible to inaccuracy <o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='font-size:11.0pt;font-family:Calibri'><span style='mso-list:Ignore'>5.<span style='font:7.0pt "Times New Roman"'>       </span></span></span><![endif]><span style='font-size:11.0pt;font-family:Calibri'>PESQ & POLQA values can range significantly more than this depending on the network, (wireline [fiber v Cu] v wireless for example), the devices used and whether the network path involved transcoding<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:Calibri'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:Calibri'>This would put it in some context<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:Calibri'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:Calibri'>Thanks<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:Calibri'>Richard<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:Calibri'><o:p> </o:p></span></p><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal style='margin-left:.5in'><b><span style='font-family:Calibri;color:black'>From: </span></b><span style='font-family:Calibri;color:black'>VoiceOps <voiceops-bounces@voiceops.org> on behalf of Colin Brown <zavoid@gmail.com><br><b>Date: </b>Wednesday, March 1, 2017 at 8:56 AM<br><b>To: </b>"voiceops@voiceops.org" <voiceops@voiceops.org><br><b>Subject: </b>[VoiceOps] PESQ test results<o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'>Hey All,<o:p></o:p></p><div><p class=MsoNormal style='margin-left:.5in'><br>For those of you doing pro-active PESQ score testing in the US.  How much fluctuation do you normally see our expect on your results?  4.1 to 4.35  for example.  That seems like a large swing to me... Was looking for opinions from others on or off list.<o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'>Thanks<o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'>Colin<o:p></o:p></p></div></div><p class=MsoNormal style='margin-left:.5in'>_______________________________________________ VoiceOps mailing list VoiceOps@voiceops.org https://puck.nether.net/mailman/listinfo/voiceops <o:p></o:p></p></div></body></html>