I need to know what kind of hardware is needed for an Asterisk Conferencing call (audio) system with support for 100+ concurrent users / 20+ conferences having in consideration:
- There will be one real phone number available for users to call from any phone.
- The revenue will be based on the time users stay in the call/phone number.
- App will implement the Asterisk Rest Interface (ARI) via .NET/C#.
Do we need other resources beside the Asterisk sever (Linux/Ubuntu machine) and the .NET server?