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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Hi<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>We can only get around 90 concurrent calls
from a Dell 2850 with dual 3.2Ghz 800FSB Xeons with a 4 port E1 hardware echo
can card and 50% G729 calls (RAM and </span></font><st1:stockticker><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'>HDD</span></font></st1:stockticker><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'> are not
relevant issues).<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Now the real question is whether <span
class=GramE>Dual</span> or Quad core Xeons OR 2 x Quad Core Xeons etc will do
any better. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>It seems as though there are two schools
of thought, those who argue Asterisk is multi-threaded and that this addresses the
bottleneck issues and those that say it doesn’t.<span
style='mso-spacerun:yes'> </span>I suspect that the second <span
class=GramE>group are</span> those who have tested dual/quad core processors.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>This is from Wikipedia (<a
href="http://en.wikipedia.org/wiki/Asterisk_PBX#Criticism">http://en.wikipedia.org/wiki/Asterisk_PBX#Criticism</a>):<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>“Unlike most next generation telephony applications and
architectures, Asterisk is built using a monolithic model and does not break
out individual parts of the application. <span class=GramE>An alternative</span>
application architecture would be disaggregated, where each architectural
component could exist independently and therefore be scalable or easily
accelerated with best of breed components. As an example, the media server
portion of the Asterisk application is not implemented as a Voice <span
class=GramE>Over</span> IP media server and cannot be easily replaced with a
hardware-based alternative. The Asterisk architecture therefore has inherent
scalability problems in terms of raw performance and functional completeness.
Due to the dual licensing nature of the Asterisk code and the feeling among
some developers that changes required to the software were not incorporated in
a timely manner, the Asterisk source base was <a
href="http://en.wikipedia.org/wiki/Fork_%28software_development%29"
title="Fork (software development)">forked</a> in 2005 and established as <a
href="http://en.wikipedia.org/wiki/OpenPBX" title=OpenPBX>OpenPBX</a>.”</span></font><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>You may find that the safest solution is
to have an external gateway (eg Vegastream) do the transcoding OR run 2
instances of Asterisk on 2 machines with the machine with the TDM card only
doing the transcoding and the other machine doing all the other work.<span
style='mso-spacerun:yes'> </span>However this is more expense, more rack
space and more complexity. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=FR
style='font-size:10.0pt;font-family:Arial;color:navy;mso-ansi-language:FR'>Regards<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=FR
style='font-size:10.0pt;font-family:Arial;color:navy;mso-ansi-language:FR'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=FR
style='font-size:10.0pt;font-family:Arial;color:navy;mso-ansi-language:FR'><o:p> </o:p></span></font></p>
<div>
<p style='margin:0cm;margin-bottom:.0001pt'><strong><b><font size=2
color="#333333" face=Tahoma><span lang=FR style='font-size:10.0pt;font-family:
Tahoma;color:#333333;mso-ansi-language:FR;mso-no-proof:yes'>Craig Lawrence</span></font></b></strong></st1:address></st1:Street><font
color=navy><span lang=FR style='color:navy;mso-ansi-language:FR;mso-no-proof:
yes'><o:p></o:p></span></font></p>
<p style='margin:0cm;margin-bottom:.0001pt'><font size=2 color="#464646"
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;color:#464646;
mso-no-proof:yes'><a href="http://www.mytel.net.au"><span lang=FR
style='mso-ansi-language:FR'>www.mytel.net.au</span></a></span></font><font
size=2 color="#464646" face=Tahoma><span lang=FR style='font-size:10.0pt;
font-family:Tahoma;color:#464646;mso-ansi-language:FR;mso-no-proof:yes'><o:p></o:p></span></font></p>
<p style='margin:0cm;margin-bottom:.0001pt'><font size=3 face="Times New Roman"><span
lang=FR style='font-size:12.0pt;mso-ansi-language:FR'><o:p> </o:p></span></font></p>
</div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma'>-----Original Message-----<br>
<b><span style='font-weight:bold'>From:</span></b>
asterisk-biz-bounces@lists.digium.com [mailto:asterisk-biz-bounces@lists.digium.com]
<b><span style='font-weight:bold'>On Behalf Of </span></b></span></font><st1:State><st1:place><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>Sichuan</span></font></st1:place></st1:State><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'><br>
<b><span style='font-weight:bold'>Sent:</span></b> </span></font><st1:date
Month="12" Day="10" Year="2006"><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma'>Sunday, 10 December 2006</span></font></st1:date><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> </span></font><st1:time
Hour="13" Minute="35"><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'>1:35 PM</span></font></st1:time><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma'><br>
<b><span style='font-weight:bold'>To:</span></b> 'Commercial and
Business-Oriented Asterisk Discussion'<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [asterisk-biz] Server
for 100 concurrent calls</span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>From my
experience and knowledge, for 100 concurrent calls, with no GUIs and other
applications running, and using G711, you need a dual Xeon 3.2MHZ 6GB RAM
server. It has to be a branded server, like from HP or DELL.<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>I
don’t believe that with any GUIs, transcoding, or other applications
running in background, any server can handle 100 concurrent calls. Maybe a quad
processor will do it, but then its better to buy two dual-processor servers.<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>Maybe
others will differ in opinion. If someone has experience of reliable 100
concurrent calls with a cheaper configuration, I’d like to hear from them
too.<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><st1:State><st1:place><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'>Sichuan</span></font></st1:place></st1:State><font size=2
color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'><o:p></o:p></span></font></p>
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No virus found in this incoming message.<BR>
Checked by AVG Free Edition.<BR>
Version: 7.1.409 / Virus Database: 268.15.15/581 - Release Date: 9/12/2006<BR>
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<P><FONT SIZE=2 FACE="Arial"> </FONT> </P><BR>
<P><FONT SIZE=2>--<BR>
No virus found in this outgoing message.<BR>
Checked by AVG Free Edition.<BR>
Version: 7.1.409 / Virus Database: 268.15.15/581 - Release Date: 9/12/2006<BR>
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