[Asterisk-Users] A rather big setup.

[Script Head]

Spreading * servers across multiple floors sounds like a bad idea since it'd
increase maintenance time. With your projected call volume there's no way
you can reliably run g729 or any other CPU hog of a codec on a single box.
For this kind of a setup you'd need 2-3 boxes and a SER/heartbeat box to
handle registration and call distribution. I would also isolate CDR
recording to a separate box running a database like Postgres (IMHO better
choice due to WAL) or MySQL.

ScriptHead


On 11/27/05, Simone Cittadini <mymailforlists at gmail.com> wrote:
>
> Vedran Dakic ha scritto:
>
> >
> >I can only guess that I should have the ability to deliver a solution
> that
> >can do some 100/500 simultaneously. The only question is how powerful
> should
> >be a machine (or machines) that could do around 100/500 simultaneously.
> And,
> >just for the sake of knowing, what should the setup be alike if it was
> >240/1000 simultaneously?
> >
> >
> >
> My suggestion is to buy the E1 cards first of all and put them in a test
> server, equipped with asterisk and all the relevant
> agi / db connections / moh etc..
> Then loop the card with a crossover cable and run some test script to
> generate the  medium and upper bound call flows.
> That should give you an idea of your cpu/ram requirements.
>
> >>In the second case there's no need for a cluster, a good server will do,
> >>(obviously a second server for backup is a good idea ). I'm assuming you
> >>can use a/ulaw to transmit the data, if bandwidth is a problem and you
> >>must compress cpu usage becomes a boottleneck to keep in mind.
> >>
> >>
> >
> >A/ulaw? I saw some reports that G.729 uses very little bandwidth and has
> >a quality part granted (audio quality). It's not a question of hardware
> >and/or CPU power, I have two dual Opteron configurations and could
> install
> >some more, it's just the question of that setup running with quality
> audio
> >and no unwanted events.
> >
> >
> G729 has a very good quality -considered the bandwidth used-, but if
> your customers are used to conventional telephony they will no doubt
> notice the difference, so go with G711 (probably alaw, since you use E1
> I suppose you are in europe)
> Anyway if bandwidth is a problem consider ilbc / speex which are free
> and have good audio qualities also.
> Lastly a lot of the quality comes from a well configured phone, tweak
> with volumes and timeouts.
>
> >I presume that I should have all of the phones using the same codec (so,
> >no transcoding), and preferrably the same VoIP protocol. I have a choice
> >there so everything's possible. Let's say - IP10s has H.323, SIP and MGCP
> >firmwares, although I'd like to leave H.323 out of the story.
> >
> >
> >
> Yes, leaving H323 out of the story is a good way to start the project :)
>
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