> ## 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.

# Voice Call

[Updated in 2026.22.0](https://docs-classic.cognigy.com/release-notes/2026.22.md)

With *Voice Call* mode, you can initiate a test call to hear how your voice AI Agent sounds.

## Prerequisites

* Activate voice call:
  * For SaaS installations, contact the support team to activate the feature.
  * For on-premises installations, activate the feature by adding `FEATURE_ENABLE_VOICECALL_WHITELIST` in `values.yaml` and assigning the corresponding organization IDs. For example, `FEATURE_ENABLE_VOICECALL_WHITELIST:<organization-1-id>,<organization-2-id>`. For all organizations, use `*`.
* Configure a voice provider in the Project's [Voice Preview Settings](https://docs-classic.cognigy.com/ai/agents/test/voice-preview.md#set-up-a-speech-provider) and the AI Agent's [voice and language](https://docs-classic.cognigy.com/ai/agents/test/interaction-panel/overview).
* Allow microphone access in your browser, and then in your device settings if needed.

> [!NOTE]
>
> If the text-to-speech provider of the project is Amazon Polly, the call ignores the **TTS Engine** default of the Node. It uses the first engine that the selected voice supports, in this order: **Standard**, **Neural**, and **Generative**.

## How to Use Voice Call Mode

To start a test call with the AI Agent, click the ![voice-call](https://mintcdn.com/cognigy-docs-legacy/eGdkyf6N-EPpPKZA/_assets/icons/black-and-white/voice-call-interaction-panel.svg?fit=max\&auto=format\&n=eGdkyf6N-EPpPKZA\&q=85\&s=6275984c6f5d11b7c7c1a54c48105d78) tab in the Interaction Panel and click ![start-call](https://mintcdn.com/cognigy-docs-legacy/eGdkyf6N-EPpPKZA/_assets/icons/start-voice-call.svg?fit=max\&auto=format\&n=eGdkyf6N-EPpPKZA\&q=85\&s=1a85eb11e1bf9c987cdda50d9eb903c2) at the bottom. To end the call, click ![end-call](https://mintcdn.com/cognigy-docs-legacy/eGdkyf6N-EPpPKZA/_assets/icons/end-voice-call.svg?fit=max\&auto=format\&n=eGdkyf6N-EPpPKZA\&q=85\&s=828132f660c467e67363a333f216a9b6).

During a call, you can:

* **Monitor the call duration**. The timer displayed next to the ![end-call](https://mintcdn.com/cognigy-docs-legacy/eGdkyf6N-EPpPKZA/_assets/icons/end-voice-call.svg?fit=max\&auto=format\&n=eGdkyf6N-EPpPKZA\&q=85\&s=828132f660c467e67363a333f216a9b6) button shows how long the call has been active.
* **Send DTMF tones**. Click ![dialpad](https://mintcdn.com/cognigy-docs-legacy/RrffkPkSwK6hoOoG/_assets/icons/black-and-white/dialpad.svg?fit=max\&auto=format\&n=RrffkPkSwK6hoOoG\&q=85\&s=995a699b4e092b9306c0dbf70ae06d80) to open a dialpad and send touch-tone (DTMF) signals during the call. With the dialpad, you can enter codes or navigate menus during a call.
* **Follow the conversation**. View the real-time conversation transcript in the Interaction Panel to track the call.

Voice call mode has a timeout. If you don't provide any voice input for a period, the call ends automatically to prevent unnecessary connection time.

To view and analyze the payload of a voice input, click ![expand](https://mintcdn.com/cognigy-docs-legacy/eGdkyf6N-EPpPKZA/_assets/icons/black-and-white/expand.svg?fit=max\&auto=format\&n=eGdkyf6N-EPpPKZA\&q=85\&s=5f6c8979f9912cceb39f3d8cfc24693f) indicated in the message fields.

## More Information

* [Voice Gateway Nodes](https://docs-classic.cognigy.com/ai/agents/develop/node-reference/voice/voice-gateway/overview)
* [Voice Preview](https://docs-classic.cognigy.com/ai/agents/test/voice-preview.md)
* [Voice Gateway](https://docs-classic.cognigy.com/voice-gateway/overview.md)


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