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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Many thanks, Gregor!<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">It now works like a charm on my bare metal workstation. Audio comes up fast after call setup, and the audio delay buildup
is gone. How did you figure it out?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Regarding virtualization, a Windows 2016 Server under Hyper-V still has the problem, but it works fine under VMWare. It
may be that people have done more performance tweaking on the VMWare system.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">/Jaan<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> FreeSWITCH-users <freeswitch-users-bounces@lists.freeswitch.org>
<b>On Behalf Of </b>Gregor Nanger<br>
<b>Sent:</b> den 5 december 2019 22:05<br>
<b>To:</b> FreeSWITCH Users Help <freeswitch-users@lists.freeswitch.org><br>
<b>Subject:</b> Re: [Freeswitch-users] Long increasing audio delay<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-family:"Trebuchet MS",sans-serif">Hi!<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-family:"Trebuchet MS",sans-serif">We are using Windows on production for years, also with verto. <o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-family:"Trebuchet MS",sans-serif">As I remember, we had similar problems. I think we solved with timer settings in verto.conf.xml to:<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-family:"Trebuchet MS",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-family:"Trebuchet MS",sans-serif"><param name="timer-name" value="none"/><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-family:"Trebuchet MS",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-family:"Trebuchet MS",sans-serif">Try to set it and see if it works.<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-family:"Trebuchet MS",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-family:"Trebuchet MS",sans-serif">Best regards, Gregor<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US">V V čet., 5. dec. 2019 ob 20:10 je oseba Jaan Kaja <</span><a href="mailto:Jaan.Kaja@enghouse.com"><span lang="EN-US">Jaan.Kaja@enghouse.com</span></a><span lang="EN-US">> napisala:<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">Hello,<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">We are testing webrtc via mod_verto with the verto_communicator demo. After some initial troubles with certificates, we have it running from Chrome and Firefox.
Very nice!<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">But, when we leave the connection on for some time, the audio in the direction from the browser to a phone becomes increasingly longer. We have clocked ~11 seconds,
if we leave it on long enough. The audio in the other direction has a normal IP telephony delay. We have not found any browser dependencies.<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">The FreeSWITCH version is 1.10.1 (latest stable release). The phone end has been a Blink softphone, or a trunk from a Cisco UCM. The latter negotiated mulaw PCM
with a 20 ms packet size.<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">We have tried different server OS:es:<o:p></o:p></span></p>
<p class="gmail-m-7040178997259382395msolistparagraph"><span lang="EN-US" style="font-family:Symbol">·</span><span lang="EN-US" style="font-size:7.0pt">
</span><span lang="EN-US">Windows Server 2019 gives the fastest buildup of delay.<o:p></o:p></span></p>
<p class="gmail-m-7040178997259382395msolistparagraph"><span lang="EN-US" style="font-family:Symbol">·</span><span lang="EN-US" style="font-size:7.0pt">
</span><span lang="EN-US">Debian installed in a Windows Substrate for Linux gives a slower buildup of delay, but it does continuously increase.<o:p></o:p></span></p>
<p class="gmail-m-7040178997259382395msolistparagraph"><span lang="EN-US" style="font-family:Symbol">·</span><span lang="EN-US" style="font-size:7.0pt">
</span><span lang="EN-US">CentOS virtualized in VMWare doesn’t have any buildup of delay, and the delay is a normal IP telephony delay.<o:p></o:p></span></p>
<p class="gmail-m-7040178997259382395msolistparagraph"><span lang="EN-US" style="font-family:Symbol">·</span><span lang="EN-US" style="font-size:7.0pt">
</span><span lang="EN-US">So, the more Windows, the worse…<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">I have a Wireshark trace, and I can get a TLS stream from it. I can install a key file to decode the stream, but the configuration wants a protocol, and I don’t
know what to enter there. There are no dissectors for Websocket. So I’m at a bit of a loss, as to how to debug this. I don’t see anything obvious in the freeswitch.log.<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">Questions:<o:p></o:p></span></p>
<p class="gmail-m-7040178997259382395msolistparagraph"><span lang="EN-US" style="font-family:Symbol">·</span><span lang="EN-US" style="font-size:7.0pt">
</span><span lang="EN-US">Has anyone used webrtc on Windows?<o:p></o:p></span></p>
<p class="gmail-m-7040178997259382395msolistparagraph"><span lang="EN-US" style="font-family:Symbol">·</span><span lang="EN-US" style="font-size:7.0pt">
</span><span lang="EN-US">Has anyone had the same problem?<o:p></o:p></span></p>
<p class="gmail-m-7040178997259382395msolistparagraph"><span lang="EN-US" style="font-family:Symbol">·</span><span lang="EN-US" style="font-size:7.0pt">
</span><span lang="EN-US">What can be done to debug the problem? Turn on some logging?<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">We could package a Linux machine to our customers, but as everything else is on Windows, it would be nice to make it work.<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">Best regards,<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">Jaan<o:p></o:p></span></p>
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<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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