> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ringee.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Provider Overview

> How telephony providers work in Ringee

## How telephony works

Ringee uses **telephony providers** to make and receive phone calls. A provider is a service that connects your browser to the global phone network (PSTN) using WebRTC technology.

```mermaid theme={null}
flowchart LR;
    classDef app fill:#15803D,color:white,stroke:#fff
    classDef provider fill:#22C55E,color:white,stroke:#fff
    classDef network fill:#86EFAC,color:black,stroke:#fff

    browser[Your Browser]:::app
    backend[Ringee Backend]:::app
    provider[Telephony Provider]:::provider
    pstn[Phone Network - PSTN]:::network

    browser -- WebRTC --> provider
    backend -- REST API --> provider
    provider -- SIP --> pstn
```

When you make a call in Ringee:

1. Your browser establishes a **WebRTC** session with the telephony provider
2. The Ringee backend uses the provider's **REST API** to manage the call (create, transfer, record, etc.)
3. The provider bridges the WebRTC connection to the **PSTN** (public phone network)

## Current Providers

| Provider                    | Status   | Protocol          | Notes                            |
| --------------------------- | -------- | ----------------- | -------------------------------- |
| [Telnyx](/providers/telnyx) | ✅ Active | WebRTC + REST API | Default and recommended provider |

## Features per provider

All providers must support these core features:

* **Outbound calls** — Make calls to any phone number worldwide
* **Inbound calls** — Receive calls on purchased phone numbers
* **Call recording** — Record calls and store them in R2
* **Phone number management** — Purchase and manage phone numbers via API
* **WebRTC** — Browser-based calling without any installed apps

## Want to add a new provider?

See [How to add a new provider](/providers/add-provider) for a guide on integrating additional telephony providers into Ringee.