Explained
The questions we get asked most.
Voice
Voice
WebRTC vs SIP, which do I use for a browser or an AI agent?
Voice
What do SIP response codes mean, and why did I get a 503?
Voice
What is a call detail record (CDR)?
Voice
What is a SIP trunk, and do I need one?
Voice
What is a voice AI agent, and how does it connect to the phone network?
Voice
What is a voice API?
Voice
What is SIP?
Voice
What is STIR/SHAKEN, and what are attestation levels A, B and C?
Voice
What is toll fraud, and how does Bird limit it?
Build on the same network.
A test API key is yours immediately. Production unlocks when you add a payment method and verify a sender.