[Asterisk-Users] A rather big setup.

[Simone Cittadini]

Vedran Dakic ha scritto:

> I have been asked by the customer to deilver a big PBX-system based on 
> Asterisk. The requirements are approximately:
>
> - up to 240 lines for making outside calls from the building
> - up to 1000 internal phone conversations (within the building)
> - scalable up to 300/1500 calls
>
You mean 240 / 1000 simultaneous calls or 240 outside lines and 1000 
internal phones ?
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.
I'm having ~80 concurrent calls from iax/sip to pri  in alaw  from an 
userbase of ~150 clients and the cpu is around 6% on a dual 2.8 Ghz.
1000 phones are a lot, and sip sometimes is an hassle (mostly nat), I 
don't know your network topology, but maybe you can consider to connect 
every group of phones to an asterisk pc and the pcs to the server via 
iax, which uses a little less bandwidth and most of all works "out of 
the box". A pentium 400 can handle ~8 calls with ilbc, so every modern 
pc will do.