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.
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