[asterisk-biz] SIP to PSTN Hardware

[Sergey Kuznetsov]

I know cases when some companies uses Asterisk with 16 PRIs on Sangoma 
AFT-108D ( 8 PRIs per card ).
Due to the fact that Sangoma cards doing lots of heavy calculations on 
board and uses only one IRQ to poll all of the ports
and you have 4 slots on your PC so you can handle 32 PRIs at once or 
even more if you have some specific motherboard
with more than 4 PCI ports. In this case you a chance to have 184 calls 
for 8 T1 and 240 calls for 8 E1 and
it will do even transcoding from ULAW to G.729. Look at this link   
http://lists.digium.com/pipermail/asterisk-biz/2006-June/014918.html
, we discussed about year ago.
Cisco in the same configuration will cost arm and leg.

All the Best!
Sergey.

Alex Balashov wrote:
> Although, if you are limited to a maximum of 4 PRIs per box (assuming this
> is even possible), you have to know which channels are available on which
> PRIs at which time so you can direct your outbound calls correctly. 
> That's where some sort of device that can take all of them at once would
> really show its beneficial colours.
>
> --
> Alex Balashov
> Evariste Systems
> Web    : http://www.evaristesys.com/
> Tel    : +1-678-954-0670
> Direct : +1-678-954-0671
>
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