[Asterisk-Users] 5,000 concurrent calls system rollout question

[Rob Lith]

What's you mix of calls going SIP/IAXand to PSTN?

We've done  some benchmark experiments on a 3GHz HT box with 1GB of ram,
mirrored traditional IDE disks. The box has a Digium quad-PRI, a TDM40B, a
TDM22B and a Sirrix quad-BRI board in it. This box can run 120 active calls
over 4 PRI spans. Its running
MusicOnHold into 60 of the channels, playing various GSM prompts into the
other 60. The "user" cpu usage is about 25%, the "system" cpu about 25%
also. We can add to that 5000 registered SIP peers and 5000 registered IAX2
peers - total of about 100 registration refreshes per second. That adds
about 40% more user CPU and pretty much fills up CPU. Audio quality is still
perfectly fine, and PRI slips few and far between. Load average for the
whole mix sits between 5 and 10. About 550Kb/s out and 400Kb/s out on the
ethernet for the registration traffic.

Also on www.voip-info.org - search for dimensioning

Rob

On 1/28/06, Vic <svictor at yahoo.co.jp> wrote:
>
> Hi,
>
> we are currently considering different options for rolling out a large
> scale IP PBX to handle around 3,000 + concurrent calls.
>
> Can this be done with Asterisk? Has it been done before?
>
> I really would like an input on this.
>
> Thanks!
>
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