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Voice Assistant

Answer the client's phone line with an AI voice agent — bookings, lookups, handoff

Connect a SIP phone number and an AI voice agent answers the client's calls — greeting, natural conversation, tools, and human handoff.

Connect voice

  1. Set up a phone number with SIP credentials (login, password, telephony URL).
  2. Connect a telephony provider integration (Binotel, Ringostat, Phonet, Unitalk).
  3. Assign an assistant configured for voice; optionally add ElevenLabs for premium voices.
  4. Call the number to test.

The agent can run webhook tools mid-call (bookings, lookups, CRM), trigger webhook_postcall follow-ups, and transfer to a human via the built-in turnOffAiMode tool. Calls are recorded and transcribed when the provider supports it.

Settings

SettingBehavior
Eagerness: EagerResponds quickly, best for simple Q&A
Eagerness: NormalBalanced timing (default)
Eagerness: PatientWaits longer, best for complex questions
Voice30 built-in voices, or ElevenLabs premium
Codec: A-law (default)Standard international telephony, 8000 Hz
Codec: μ-lawStandard North American telephony, 8000 Hz

API: api.happ.tools/reference

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