5 guides · written by the team building Tone

Resources

Automated calling in India, written by the people building the carrier path underneath it. Measured numbers where we have them, and the regulation stated as it is rather than as it is usually repeated.

LatestVoice AI engineering·

How a voice AI pipeline actually works, end to end

What happens between a caller finishing a sentence and an agent answering it: voice activity detection, streaming speech recognition, the language model, speech synthesis, and the four places it usually breaks.

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Use cases

What automated calling is actually used for in India — order confirmation, lead qualification, renewals, reminders — and how each one is built.

Voice AI engineering

How a voice agent works end to end: the speech-to-speech pipeline, where the latency goes, and what we measure in production.

India compliance

TRAI, TCCCPR and DLT for automated voice calls — what the rules require, what they do not, and what an audit trail has to contain.

Looking for the API?

These pages explain the problem space. The developer documentation explains the product — endpoints, webhooks, and how to place a call.