If you search, you'll probably find that this question has been asked several times - each time, the general response will be:  It depends on what you're trying to accomplish.

http://wiki.freeswitch.org/wiki/Specsheet#Minimum.2FRecommended_System_Requirements
http://wiki.freeswitch.org/wiki/Performance_testing_and_configurations#Recommended_hardware.2FOS

There is no "real" answer, but if you supply more information as to what your FreeSWITCH installation will be doing, you might get a helpful response from one of the experts.

On Thu, May 10, 2012 at 12:43 PM, <tarik.bts.gi@gmail.com> wrote:
What is the good hardware configuration
that needs freeswitch to support more then 30 calls? We have now 1.6 GHz in the CPU and 2 GB in the mem but is not enough.

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