How can I load test and performance test an asterisk sip server to find out how many concurrent calls a server can handle?

I have deployed asterisk server in AWS.

  1. I would like to know how many calls it can handle concurrently at the same time?
  2. Is it possible to do a load test with several phone numbers? How to simulate it? Any tools?
  3. Any pre-defined tables or suggestions based on system hardware config that a 8gb RAM, 200 GB SSD AWS with asterisk server would handle X number of calls simultaneously?

google for SIPP, it can simulate calls