[Serusers] load testing mediaproxy for more than 50 calls

[Simone Cittadini]

I need to test the new ser/radius/mediaproxy server we have bought.
As a fast upper bound to the maximum number of concurrent calls I tought 
to use rtpgenerator, but it can't increase the number of simultaneous 
calls more than 50 ...

Is there any way to increase that limit ? (why it is set anyway ?)
Launching a second instance raises cpu usage from 0,5 to 98, so it 
doesn't seems a good solution ...