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From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
To: sergio lenzi <lenzi@k1.com.br>
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Cc: "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org>
Subject: Re: FreeBSD as VOIP PBX
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>
>
> each board fires 2 irqs and 1000 irq/sec each...  so is 2000 irq per
> board,
> at a max of 6000 irq /sec....
>
> Cpu use (using top) is about 10%  only when receiving fax (because of

still quite a lot ;)

when i connected 56 cisco phones to my laptop (used 4*16 port switches 
;), and having all of them working (called from first to second, from third to 
fourth etc..) there was below 4% CPU load but it's 1200Mhz Pentium-3M.