<HTML xmlns="http://www.w3.org/TR/REC-html40" xmlns:a="urn:schemas-microsoft-com:office:access" xmlns:b="urn:schemas-microsoft-com:office:publisher" xmlns:c="urn:schemas-microsoft-com:office:component:spreadsheet" xmlns:D="DAV:" xmlns:dir="http://schemas.microsoft.com/sharepoint/soap/directory/" xmlns:ds="http://www.w3.org/2000/09/xmldsig#" xmlns:dsp="http://schemas.microsoft.com/sharepoint/dsp" xmlns:dssi="http://schemas.microsoft.com/office/2006/digsig" xmlns:dsss="http://schemas.microsoft.com/office/2006/digsig-setup" xmlns:dt="uuid:C2F41010-65B3-11d1-A29F-00AA00C14882" xmlns:ec="http://www.w3.org/2001/04/xmlenc#" xmlns:ex12m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:ex12t="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:html="http://www.w3.org/TR/REC-html40" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns:mdssi="http://schemas.openxmlformats.org/package/2006/digital-signature" xmlns:mrels="http://schemas.openxmlformats.org/package/2006/relationships" xmlns:mt="http://schemas.microsoft.com/sharepoint/soap/meetings/" xmlns:mver="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:oa="urn:schemas-microsoft-com:office:activation" xmlns:odc="urn:schemas-microsoft-com:office:odc" xmlns:ois="http://schemas.microsoft.com/sharepoint/soap/ois/" xmlns:p="urn:schemas-microsoft-com:office:powerpoint" xmlns:ppda="http://www.passport.com/NameSpace.xsd" xmlns:pptsl="http://schemas.microsoft.com/sharepoint/soap/SlideLibrary/" xmlns:q="http://schemas.xmlsoap.org/soap/envelope/" xmlns:Repl="http://schemas.microsoft.com/repl/" xmlns:rs="urn:schemas-microsoft-com:rowset" xmlns:rtc="http://microsoft.com/officenet/conferencing" xmlns:s="uuid:BDC6E3F0-6DA3-11d1-A2A3-00AA00C14882" xmlns:sp="http://schemas.microsoft.com/sharepoint/" xmlns:sps="http://schemas.microsoft.com/sharepoint/soap/" xmlns:spsl="http://microsoft.com/webservices/SharePointPortalServer/PublishedLinksService" xmlns:spwp="http://microsoft.com/sharepoint/webpartpages" xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet" xmlns:st="" xmlns:sub="http://schemas.microsoft.com/sharepoint/soap/2002/1/alerts/" xmlns:udc="http://schemas.microsoft.com/data/udc" xmlns:udcp2p="http://schemas.microsoft.com/data/udc/parttopart" xmlns:udcs="http://schemas.microsoft.com/data/udc/soap" xmlns:udcxf="http://schemas.microsoft.com/data/udc/xmlfile" xmlns:v="urn:schemas-microsoft-com:vml" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:wf="http://schemas.microsoft.com/sharepoint/soap/workflow/" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns:x2="http://schemas.microsoft.com/office/excel/2003/xml" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:Z="urn:schemas-microsoft-com:"><head><META content="text/html; charset=us-ascii" http-equiv="Content-Type"><STYLE><!--
/* Style Definitions */
p.da4cf23b-f2f7-4499-8818-0c92fcaf2e41, li.da4cf23b-f2f7-4499-8818-0c92fcaf2e41, div.da4cf23b-f2f7-4499-8818-0c92fcaf2e41, table.da4cf23b-f2f7-4499-8818-0c92fcaf2e41Table
{margin:0cm; margin-bottom:.0001pt;}
div.Section1
{page:Section1;}
--></STYLE>
<meta content="text/html; charset=us-ascii" http-equiv=Content-Type>
<meta content="Microsoft Word 12 (filtered medium)" name=Generator>
<style>
<!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:Verdana;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p
{mso-style-priority:99;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
span.EmailStyle18
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;}
@page Section1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.Section1
{page:Section1;}
-->
</style>
<!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head><BODY>
<div class=Section1>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I was able to reduce it considerably. I can’t say it
is completely gone but I am very confident the ~.5 second delay I hear is
because of the time it takes my voice to go through the leaps and bounds of the
phone company to our server. I had at least a 3-5 second delay before I
experimented with the conference settings.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><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><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
freeswitch-users-bounces@lists.freeswitch.org
[mailto:freeswitch-users-bounces@lists.freeswitch.org] <b>On Behalf Of </b>Bradley
Brashier<br>
<b>Sent:</b> Tuesday, June 16, 2009 5:02 PM<br>
<b>To:</b> freeswitch-users@lists.freeswitch.org<br>
<b>Subject:</b> Re: [Freeswitch-users] Voice lag in conference<o:p></o:p></span></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<p class=MsoNormal>I'm not sure I've got the opportunity to do that at the
moment, but I do appreciate the point of view of a fellow product user. Were
you able to eliminate noticeable lag, or just reduce it to reasonable levels?<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='margin-bottom:12.0pt'>I'll try to do something
similar when I update to the newest trunk as Anthony suggested. My copy
is only a week old, but I'll try whatever has a chance of working, and I
know you guys have been working on conferencing (the Moderator function
couldn't have been timed better for me!).<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>On Tue, Jun 16, 2009 at 12:01 PM, Josh Moon <<a href="mailto:joshm@wabashcenter.com">joshm@wabashcenter.com</a>> wrote:<o:p></o:p></p>
<div>
<div>
<p><span style='font-size:11.0pt;color:#1F497D'>I am not as knowledgeable as
the developers that will respond to your question but I had the same problem as
you. Here is what I did to combat the delay:</span><o:p></o:p></p>
<p><span style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<p><span style='font-size:11.0pt;color:#1F497D'>First off I started everything
from scratch. I reinstalled Linux and then I reinstalled FreeSWITCH by
creating .deb packages.</span><o:p></o:p></p>
<p><span style='font-size:11.0pt;color:#1F497D'>I then created my own
conference profile and set the sample rate to 4000 and changed the energy level
to 20.</span><o:p></o:p></p>
<p><span style='font-size:11.0pt;color:#1F497D'>I also made sure to test the
conference room from phones that were in completely different areas so there
wasn’t a chance for feedback or really bad echoing problems.</span><o:p></o:p></p>
<p><span style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<p><span style='font-size:11.0pt;color:#1F497D'>Once I knew the delay was
solved I raised the sample rate to 8000. I tested it to make sure it
would work properly.</span><o:p></o:p></p>
<p><span style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<p><span style='font-size:11.0pt;color:#1F497D'>As Michael stated, this could
be your network infrastructure but I just wanted to let another FreeSWITCH user
know what I did to try and stop the voice delay.</span><o:p></o:p></p>
<p><span style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p><b><span style='font-size:10.0pt'>From:</span></b><span style='font-size:
10.0pt'> <a href="mailto:freeswitch-users-bounces@lists.freeswitch.org" target="_blank">freeswitch-users-bounces@lists.freeswitch.org</a> [mailto:<a href="mailto:freeswitch-users-bounces@lists.freeswitch.org" target="_blank">freeswitch-users-bounces@lists.freeswitch.org</a>]
<b>On Behalf Of </b>Bradley Brashier<br>
<b>Sent:</b> Tuesday, June 16, 2009 1:52 PM<br>
<b>To:</b> <a href="mailto:freeswitch-users@lists.freeswitch.org" target="_blank">freeswitch-users@lists.freeswitch.org</a><br>
<b>Subject:</b> [Freeswitch-users] Voice lag in conference</span><o:p></o:p></p>
</div>
<div>
<p> <o:p></o:p></p>
<p>I'm creating a conferencing product for use in a system with theoretically
several hundred concurrent calls. I'm using FreeSwitch to create this product,
but am not only new to FreeSwitch, but also the entire telecom industry as well
as Open Source projects in general (I'm a recovering BIOS guy).<br>
<br>
I've got a bare-bones conference up and running on the server, including a
handshake and a couple of features, and am using the default packages from the
current trunk, but I've noticed that voice lag is a pretty big issue. Common
lag times are several hundred milliseconds, and I've heard as long as a second.
It seems to be at least marginally specific to individual phones -- certain
phones have longer lag than others even on the same call.<br>
<br>
My question is really about what my options are. Is this just a part of SIP? Of
conferencing? Of FreeSwitch? Are there things I can prune or slim down that
will help? Is this a common issue? If it's common, is it expected by the
marketplace? <o:p></o:p></p>
</div>
</div>
<p><span style='font-size:7.5pt;font-family:"Verdana","sans-serif";color:silver'>This
message contains confidential information and is intended only for the
individual named. If you are not the named addressee you should not
disseminate, distribute or copy this e-mail. Please notify the sender
immediately by e-mail if you have received this e-mail by mistake and delete this
e-mail from your system. E-mail transmission cannot be guaranteed to be secure
or error-free as information could be intercepted, corrupted, lost, destroyed,
arrive late or incomplete, or contain viruses. The sender therefore does not
accept liability for any errors or omissions in the contents of this message,
which arise as a result of e-mail transmission. If verification is required
please request a hard-copy version.<o:p></o:p></span></p>
</div>
<p class=MsoNormal style='margin-bottom:12.0pt'><br>
_______________________________________________<br>
Freeswitch-users mailing list<br>
<a href="mailto:Freeswitch-users@lists.freeswitch.org">Freeswitch-users@lists.freeswitch.org</a><br>
<a href="http://lists.freeswitch.org/mailman/listinfo/freeswitch-users" target="_blank">http://lists.freeswitch.org/mailman/listinfo/freeswitch-users</a><br>
UNSUBSCRIBE:<a href="http://lists.freeswitch.org/mailman/options/freeswitch-users" target="_blank">http://lists.freeswitch.org/mailman/options/freeswitch-users</a><br>
<a href="http://www.freeswitch.org/" target="_blank">http://www.freeswitch.org</a><o:p></o:p></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<FONT color="silver" face="Verdana" size="1"><P CLASS="da4cf23b-f2f7-4499-8818-0c92fcaf2e41">This message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. E-mail transmission cannot be guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender therefore does not accept liability for any errors or omissions in the contents of this message, which arise as a result of e-mail transmission. If verification is required please request a hard-copy version.</P></FONT></BODY></HTML>