Thanks, it depends a lot on what are you trying to do, if you are going to use just cloud providers you don't need a heavy system , a simple system with 2 cores 4 GB RAM with asterisk should suffice, if the call volume is low.

But if you want to go full local route then you need GPU and if call volume is heavy then more RAM and CPU.

Basic hardware should be handle 20-30 concurrent calls with a cloud provider.

Full breakdown of hardware requirements is captured in this document: https://github.com/hkjarral/AVA-AI-Voice-Agent-for-Asterisk/...