I would like to know, if there is an estimation of max users capabilities for a system using elastix 1.0 (including Call Center Module). I know it depends on used hardware, but it would be useful to have an estimation, i.e.: A 250 extensions system with 10 call agents and 2 operators, voice mail, 3 E1 PRI cards, etc. would need a server with 2 GB RAM, 160 MB HDD, 2 Ghz core 2 duo CPU (just a guess). A 100 extensions system .... If no such estimation, is there a way we could try to do that, like a design guide?. I know it depends on each case and also Asterisk itself is a limiting, but my concerns are because with elastix, we have a lot more than Asterisk.