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

# Click To Call

*Cognigy Click To Call* is a multimodal voice application that allows for seamless communication between users and your voice AI Agent with a single click.

The main function is to create easy to use voice AI Agent widgets that you can embed in your website. Additionally, you can build a custom experience with the Click To Call SDK.

Click To Call is built with the web real-time communication (WebRTC) protocol and Opus codec, and delivers low-latency, high-quality audio communication.

<video width="200" height="200" aria-label="Cognigy Click to Call hero animation showing a user speaking to a voice AI agent using the Click to Call widget." autoPlay muted loop>
  <source src="https://docscognigyassets.blob.core.windows.net/assets/click-to-call-white-mode.mp4" type="video/mp4" />
</video>

⏸

> [card] [About Click To Call](https://docs-classic.cognigy.com/click-to-call/overview.md)
>
> Learn about Click To Call, deployment options, key benefits, prerequisites, and restrictions.

> [card] [Quickstart](https://docs-classic.cognigy.com/click-to-call/quickstart.md)
>
> Set up a basic Click To Call widget in a few steps.

> [card] [Configure](https://docs-classic.cognigy.com/click-to-call/configure.md)
>
> Configure the Click To Call widget in the Voice Gateway Endpoint settings.

> [card] [Embed](https://docs-classic.cognigy.com/click-to-call/embed.md)
>
> Embed the Click To Call widget in your website.

> [card] [Tutorials](https://docs-classic.cognigy.com/click-to-call/tutorials/overview.md)
>
> These tutorials help you with advanced setups for the Click To Call widget.

> [card] [SDK](https://docs-classic.cognigy.com/click-to-call/sdk/overview.md)
>
> Build a custom voice interface from scratch with the Click To Call SDK.


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