Hi Stelios,<div><br></div><div>Thanks for the response. </div><div><br></div><div>I take the following excerpt from your response. --- "You can, but usually for virtual/hosted pbx's you need an additional</div>layer of management software or a lot of copy paste"<div>
<br></div><div>Could you please elaborate on that? Do need to modify Asterisk or there exists some software that does the job?</div><div><br></div><div>Regards.<br><div><br></div><div><br></div><div><br></div><div><br><br>
<div class="gmail_quote">On Mon, Jul 23, 2012 at 6:07 PM, Stelios Koroneos <span dir="ltr"><<a href="mailto:skoroneos@digital-opsis.com" target="_blank">skoroneos@digital-opsis.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="im">On Mon, 2012-07-23 at 12:27 +0530, Kannan wrote:<br>
> Thanks SamyGo and Mitul for your prompt responses.<br>
><br>
><br>
> I have been vested with the responsibility to evaluate Asterisk for a<br>
> VOIP solution. I was just going through couple of documents and got<br>
> impressed by the features it has to offer. Our user base is around<br>
> 15000 and the system should support 1000 concurrent calls, with BHCA<br>
> projected at 16000.<br>
><br>
<br>
</div>The number of registered users is not that big, the 1000 concurrent<br>
calls means multiple asterisk boxes load balanced and that can be tricky<br>
at times.<br>
If you use transcoding at the asterisk side then 200-300 concurrent<br>
calls is what to expect per box (depending on codec used)<br>
<div class="im"><br>
<br>
><br>
> I plan to use OpenSER for SIP registrations and Asterisk for media<br>
> processing. RTP Proxy will be used for handling NAT traversal. DNS<br>
> based load balancing/fail over is preferred over Ultramonkey based<br>
> one.<br>
><br>
><br>
> I have quite a few more questions on Asterisk.<br>
> 1. Can we setup virtual private PBX inside Asterisk. I.e. One<br>
> installation of Asterisk will handle many configured hosted PBXs. Each<br>
> virtual private PBX should be able to be configured and managed<br>
> separately.<br>
<br>
</div>You can, but usually for virtual/hosted pbx's you need an additional<br>
layer of management software or a lot of copy paste ;)<br>
Another thing i have seen with hosted/virtual pbx's especially if you<br>
use real-time to configure them is that the resources required on the<br>
box are substantial and thus you get less virtual pbx's per box than if<br>
you used the classical flat-file configs.<br>
Its a trade-off between easy of usage and resources required but if you<br>
have lots of virtual pbx's running on premises it adds up quickly.<br>
<div class="im"><br>
<br>
> 2. Do we have to buy Fax licence, if Asterisk is to support end-to-end<br>
> Fax. I.e. Asterisk will not be used in Fax media procession, but only<br>
> the SIP signals will be handled by Asterisk.<br>
><br>
<br>
</div>If it's T38 pass-through you don't need a license.<br>
Have a look here<br>
<a href="http://www.voip-info.org/wiki/view/Asterisk+T.38" target="_blank">http://www.voip-info.org/wiki/view/Asterisk+T.38</a><br>
<br>
If asterisk does any processing then Digium offers licenses.<br>
<span class="HOEnZb"><font color="#888888"><br>
Stelios<br>
</font></span><div class="HOEnZb"><div class="h5"><br>
<br>
<br>
<br>
<br>
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</div></div></blockquote></div><br></div></div>