IAX2 trunk can be done. It will manage more concurrent calls.<br><br><div class="gmail_quote">On Mon, Jul 16, 2012 at 3:01 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="HOEnZb"><div class="h5">On Fri, 2012-07-13 at 22:55 +0600, Alex jhon wrote:<br>
> Hello All,<br>
><br>
><br>
> I have 250kbps uplink bandwidth. is there any possibility that i can<br>
> run 32 channel GSM-VoIP gateway using this? I need to deploy VPN too.<br>
><br>
><br>
> Thank You<br>
> Alex<br>
<br>
<br>
</div></div>The short answer is no you can't get 32 *concurrent* channels on a<br>
250kbps uplink<br>
<br>
With G729 as a codec you need around 32kbits per channel including the<br>
overheads from the voip protocol and tcp etc, so that would give you<br>
around 7 *concurrent* channels.<br>
Even with G723 at 20kbits per channel you could get a max of 10-11<br>
concurrent channels.<br>
<div class="HOEnZb"><div class="h5"><br>
<br>
<br>
--<br>
_____________________________________________________________________<br>
-- Bandwidth and Colocation Provided by <a href="http://www.api-digital.com" target="_blank">http://www.api-digital.com</a> --<br>
<br>
asterisk-biz mailing list<br>
To UNSUBSCRIBE or update options visit:<br>
<a href="http://lists.digium.com/mailman/listinfo/asterisk-biz" target="_blank">http://lists.digium.com/mailman/listinfo/asterisk-biz</a><br>
</div></div></blockquote></div><br>