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<P>Hi, Joash,
<P>thank you for your email. I was very relieved to hear that someone was already doing this.
<P>Can you please tell me more about your test? Why did you test it in a first place?
<P>For me, we need to come up with a system that needs to:
<P>1. Handle 5,000 inbound SIP calls
<P>2. offer IVR capability
<P>3. Billing
<P>I thought that Asterisk would be up to the task, but, I am not sure as to:
<P>1. How many servers should I consider? 4? 10? Obviously, we will be talking about probably core Xeon servers if this is what we need.
<P>2. How hard would it be to implement?
<P>3. How bad is g729 quality?
<P>4. IVR : if the call is SIP, can we do prompts without transcoding?
<P>Any other suggestions that you might have would really be appreciated.
<P>
<P>
<P> <B><I>Joash Herbrink <Joash.Herbrink@Kahuna.nl></I></B> wrote:
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<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN lang=EN-US style="FONT-SIZE: 10pt">I have tested an asterisk server with over 5000 concurrent calls.<o:p></o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN lang=EN-US style="FONT-SIZE: 10pt">The system setup was a P4 HT 3Ghz, 4 Gb RAM, and 1 gbps Ethernet connection on a cisco 3560 switch.<o:p></o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN lang=EN-US style="FONT-SIZE: 10pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN lang=EN-US style="FONT-SIZE: 10pt">This works, but puts some serious stresses on the system.<o:p></o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN lang=EN-US style="FONT-SIZE: 10pt">Why don't u considered using g.729 codec, this will at least lower the bandwidth consumption significantly, and, you can overcome the CPU resource issue by just using a server grade multi CPU xeon server.<o:p></o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN lang=EN-US style="FONT-SIZE: 10pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN lang=EN-US style="FONT-SIZE: 10pt">I would never the less still connect the system via 2 ethernet connections, just for some redundancy, as mentioned before in this thread.<o:p></o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN lang=EN-US style="FONT-SIZE: 10pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN lang=EN-US style="FONT-SIZE: 10pt">Bandwidth should be about 24 kbps (half duplex) per call<o:p></o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN lang=EN-US style="FONT-SIZE: 10pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN lang=EN-US style="FONT-SIZE: 10pt">So, 5000 * 24 is roughly 120 mbps, so a gigabit Ethernet should do just fine.<o:p></o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN lang=EN-US style="FONT-SIZE: 10pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN lang=EN-US style="FONT-SIZE: 10pt">Joash<o:p></o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN lang=EN-US style="FONT-SIZE: 10pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN lang=EN-US style="FONT-SIZE: 10pt">-----Original Message-----<BR>
From: asterisk-users-bounces@lists.digium.com [mailto:asterisk-users-bounces@lists.digium.com] On Behalf Of Dustin Wildes<BR>
Sent: Wednesday, February 01, 2006 8:54 AM<BR>
To: <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" /><st1:PersonName w:st="on">Asterisk Users Mailing List - Non-Commercial Discussion</st1:PersonName><BR>
Subject: Re: [Asterisk-Users] 5,000 concurrent calls system rollout question</SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt">Dinesh Nair wrote:<o:p></o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt">><o:p> </o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt">><o:p> </o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt">> On 02/01/06 09:29 Damon Estep said the following:<o:p></o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt">><o:p> </o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt">>> Ok, now lets go for 5000 of them. 160kbps*5000=800000kbps or 800mbps -<o:p></o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt">>> full duplex.<o:p></o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt">>><o:p> </o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt">>> Have you ever seen a NIC or switch that can run GigE full duplex at 80%<o:p></o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt">>> utilization and not at least start to fall apart?<o:p></o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt">><o:p> </o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt">><o:p> </o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt">> additionally, 5000 simultaneous SIP calls at 20ms intervals will send,<o:p></o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt">><o:p> </o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt">> 5,000 * 50 * 2 = 500,000 packets per second (full duplex).<o:p></o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt">><o:p> </o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt">> not too many boxes can handle such packet load, in spite of the <o:p></o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt">> relatively small packet sizes.<o:p></o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt">><o:p> </o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt">Why not bond multiple NICs together to do a load balance output? Would <o:p></o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt">provide redundancy as well.<o:p></o:p></SPAN></FONT></P>
<P class=MsoPlainText><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt"><o:p> </o:p></SPAN></FONT></P>
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