API referenceAPI referenceVoiceReal-time calls with Io: start one, read how it went, hang up.3 methodsPOSTStart a voice call/v1/voice/sessions→GETGet a voice call/v1/voice/sessions/{session_id}→POSTEnd a voice call/v1/voice/sessions/{session_id}/end→Get narration usage GETPrevious PageStart a voice call POSTNext Page