I have been searching for a simple audio chat/intercom system for headless Raspberry PI and can't find one. Installing Asterisk, FreePBX, etc. will work but is way too complex to run for a simple 5 or 6 station intercom.
I've done low-level development using WIN32 API but not in Linux or Raspberry. Still, I'm thinking that I will have to write my own solution to do what I need but I have no clue where to start. I don't find any API documentation for low-level system access like I find in Windows.
Where can I find documentation to start?