Cloud TTS guide

Turns text into natural speech with cloud services (Google, Amazon Polly, Azure, ElevenLabs, OpenAI). Listen to the result, download it as MP3, or save it as an announcement in one click: it is converted to Asterisk's format (8 kHz WAV) and added to Sounds & Announcements for IVRs, inbound routes and time conditions (takes effect after Apply). These services are paid and bill per character; every synthesis is kept in the history with its character count. Access keys come from each provider's console, are stored encrypted and are never shown on the page again.