# Telephony Providers

SIP providers that supply the client's phone number for voice agents

> Full REST + WebSocket API reference: https://api.happ.tools/reference

Pick one supported telephony provider for the client's SIP number, then bind it in Happ.

<VoiceProvidersDemo />

## Connect a provider [#connect-a-provider]

1. Create an account with the provider and get SIP credentials (login, password, server URL) for the phone number.
2. Add the phone in Happ: **Phones** > **Add Phone** (see [Phone & SIP Setup](/docs/voice/setup)).
3. Add the integration: **Integrations** > **Add Integration** > pick the provider, enter credentials, activate.

## Supported providers [#supported-providers]

| Provider                                     | What it is                                | Notes                                                       |
| -------------------------------------------- | ----------------------------------------- | ----------------------------------------------------------- |
| [Binotel](/docs/voice/providers/binotel)     | Ukrainian VoIP for business phone systems | API Key + API Secret — issued by Binotel support on request |
| [Ringostat](/docs/voice/providers/ringostat) | Call tracking + analytics with telephony  | Auth Key — generated on the Ringostat API page              |
| [Phonet](/docs/voice/providers/phonet)       | Cloud telephony for businesses            | Domain + API Key — from the CRM-integration section         |
| [Unitalk](/docs/voice/providers/unitalk)     | Telephony for contact centers             | API Key — created on the UniTalk API page                   |

## ElevenLabs (premium voices) [#elevenlabs-premium-voices]

Not a telephony provider — supplies high-quality text-to-speech. **Integrations** > **Add Integration** > **ElevenLabs**, enter your API key from [elevenlabs.io](https://elevenlabs.io). ElevenLabs voices (multiple languages, accents, voice cloning) then appear in the assistant's voice settings. Without it, the agent uses one of the 30 built-in voices.

**API:** [api.happ.tools/reference](https://api.happ.tools/reference)

## Next [#next]

* [Phone & SIP Setup](/docs/voice/setup) — connect the number
* [Voice Assistant](/docs/voice) — overview and settings