Show HN: Open-source phone calling infra for AI agents (github.com)

I’d this VoIP or physical sim?

the hard part with phone agents was never the calling, it's turn-taking under latency: barge-in, endpointing, and the ~700ms where the model's still thinking and the human already started talking. that's where most of these fall apart, so whoever nails the interruption handling is the one that actually ships.