Make and receive calls, build IVR flows, record conversations, and transcribe in real time. Global coverage with SIP trunking and WebRTC support.
Bird's Voice API gives you full programmatic control over every phase of a call — from initiation through termination. Make outbound calls with text-to-speech or audio playback, collect DTMF input, route inbound calls through IVR menus, and manage call state in real time via REST or webhooks.
Make calls programmatically with text-to-speech (20+ languages, multiple voices), pre-recorded audio playback, and DTMF input collection. The API supports call progress detection to distinguish between human answers, voicemail, and busy signals.
Route incoming calls with multi-level IVR menus, queue management with estimated wait times, skill-based routing to agent groups, and time-of-day routing rules. Call flow logic is defined via API — no drag-and-drop builder required.
Create multi-party conference calls with moderator controls including mute, hold, and participant management. Supports up to 250 participants per conference with individual recording and real-time event notifications.
Every call can be recorded, transcribed in real time, and stored for compliance or analysis. Bird's Voice API also integrates with existing telephony infrastructure through elastic SIP trunking — connect your PBX, contact center, or SBC without replacing your current setup.
Record calls with automatic cloud storage, on-demand playback, and download via API. Supports dual-channel (stereo) recording for separate caller/callee tracks, and configurable recording start triggers.
Live speech-to-text transcription during calls with speaker diarization, punctuation, and interim results streamed via WebSocket. Supports 30+ languages with automatic language detection.
Connect your existing PBX or contact center infrastructure with elastic SIP trunking. No capacity planning needed — trunks scale automatically. Supports TLS encryption, SRTP media encryption, and failover to backup endpoints.
Bird's Voice API replaced our legacy telephony provider in a weekend. The call quality is excellent and the real-time transcription accuracy is impressive.
Airwallex, Product Engineering