[Asterisk-Users] max asterisk load

Steven Critchfield critch at basesys.com
Thu Jun 3 10:54:35 MST 2004


On Thu, 2004-06-03 at 10:53, shabanip wrote:
> I have a big case:
>  - 5 x TE410P/TE405P quad T1 (try to not sharing IRQs on them)
>  - 20 x TA750 CB (60 FXO and 420 FXS)
>  - echo cancellation will be used if required.
>  - up to 200 registered sip phone
>  - using ulaw as default codec for all connections
>  - voicemail, ACD, IVR and MOH will be used
>  - conference will be rarely used.
> 
> whats your recommended pc? a quad xeon or even a quad opteron with xxGB 
> of memory? is it enough for this big job?

Couple of problems with your wish.

1st, at 60 FXO, stop using analog and get T1 or E1 links in. You
probably will receive a discount on the links and you get away from all
the analog problems. Not to mention at least the cost of 2 or 3 TA750
setups and the FXO cards. 

2nd. You don't want that many TE4XXP cards in the same machine, one
crash and all calls go down. Spread your risk.

3rd. A quad anything is going to cost you more than 4 single cpu
machines with similar cpus. SMP does not scale at x*cpu speed, it is
about 70%-80% additional per CPU. So 4 single machines will be about 1
whole CPU faster than the quad anyways.

4th. echo cancellation is always required with analog links.

So the suggestion is 2 or 3 decent P4 machines and spread the cards
around. Maybe use a forth machine to hold all voicemail. Consider 1
machine with the the PSTN connections and and 2 channel banks. Machine 2
and 3 handle only channel banks with 2 cards apiece, Machine 4 is
voicemail and possibly the SIP interface. Machine 4 only needs an
ethernet card, raid, and a decent amount of ram. Machine 2 and 3 need a
decent ethernet card and decent ram, maybe an IDE drive each. Machine 1
needs decent memory, ethernet card, and possibly just an ide drive.

A little extension magic and all is good to go and less than a quad
anything board.
-- 
Steven Critchfield  <critch at basesys.com>




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