The tests were performed when Flash Operator Panel (FOP) server is running.
Asterisk was running without the real time priority.
The criterion for the number of maximum simultaneous calls is the number of calls when the Asterisk CPU consumption is less than 60% (with some fluctuations that may reach up to 70-80%).
Related Info - White Papers
Xorcom has developed a library of white papers to help leverage the benefits of VoIP technology in general, and the Asterisk platform in particular: