On 9/21/05, <b class="gmail_sendername">izo</b> <<a href="mailto:marcin.izo@gmail.com">marcin.izo@gmail.com</a>> wrote:<div><span class="gmail_quote"></span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
On 9/21/05, Matt Florell <<a href="mailto:astmattf@gmail.com">astmattf@gmail.com</a>> wrote:<br>> We have sevaral call centers as well, and we just restrict a single server<br>> to 50 recordings at once and then we would pass the next recording as an
<br>> IAX2 channel to another recording server. It's a scalable system for us that<br>> is relatively cheap and works well since we can mix and gsm-encode the audio<br>> on these multiple servers at night when not in production leaving the NSF
<br>> server just for storage and not audio processing.<br><br>Interesting approach,<br>How do you deal with queue management ?<br>Do you have central server that manages all queues ?<br>How many phone calls u have at same time ? Inbound or outbound ?
<br>Could you share a little bit more on the architecture of your system ?<br><br>regards<br>m</blockquote><div><br>
We wrote VICIDIAL(part of the GPL astGUIclient suite
<a href="http://astguiclient.sf.net">http://astguiclient.sf.net</a>) for our call center operations. Yes it does
use a central queue and does not use Asterisk queues or agents. The
system is based on a MySQL database and meetme rooms for the agents
that use a web-client app for lead information and call control.<br>
<br>
We mostly do outbound and the volume is split across several servers,
and for inbound we do have forwarding to other servers if the defined
capacity is exceeded a certain point. <br>
<br>
As for our distributed recording approach, it's easy with meetme rooms
to record a call on one server from another server, you just drop a
call into the meetme room that is a monitor exten on another server
over IAX2, TDMoE or a crossover Zap T1 connection.<br>
<br>
As for phone calls at one time: for inbound we almost never exceed 50
agents on a single server with no more than 72 incoming lines live at
once. Our average is actually much less than that. For outbound we
usually have about 15-40 agents per server with upto 96 lines dialing
out concurrently. At our main office location we've had over 100 agents
on at one time across 6 Asterisk servers handling over 350 calls at
once with a total of more than 550 live channels on our Asterisk
servers(includes recording, client and trunk channels). <br>
<br>
We mostly use cheaper single CPU systems instead of more expensive
multi-CPU systems which is more cost effective in a larger setup and
allows for greater flexibility, redundancy and scalability.<br>
<br>
I'll also be presenting a case-study on our whole setup at Astricon
next month. The presentation file will be available on the astGUIclient
project website after I present it for those who are interested.<br>
<br>
MATT---<br>
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