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

# Phone Agents

> Agents that can speak, listen, and take action during a call

A Phone Agent is a type of agent that can make outbound calls on your behalf. During a call, it speaks naturally with the person on the other end while also being able to take action — running tools, looking up information, and responding based on what it hears in real-time. This makes it useful for tasks like outbound sales, appointment reminders, or any workflow where a voice interaction is part of the process.

## Creating a Phone Agent

There are two ways to create a Phone Agent:

* From the **Agents** tab, click **Phone** to create one directly.
* Click **+ New Agent** from the Agents tab and select **Phone** as the agent type.

<Info>
  Your Phone Agent can use tools during a call, but doing so will pause the conversation while the tool runs. To keep calls smooth, we recommend adding your Phone Agent to a [Workforce](/build/workforces/create-a-workforce) so a parent agent can complete any research or data gathering before the call starts.
</Info>

## Phone Agent settings

### Greeting

| Setting                     | Description                                                                                                                                                                                          |
| --------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| First message mode          | How the agent behaves at the start of the call. Options: agent speaks first with a model-generated message, agent speaks first with a message you write, or agent waits for the user to speak first. |
| First message               | The first thing your agent says to start the conversation.                                                                                                                                           |
| First message interruptions | When enabled, allows the user to interrupt the agent's first message.                                                                                                                                |

### Outbound phone number

<CardGroup cols={3}>
  <Card title="Provided by Relevance" icon="phone">
    Pick a phone number provided by Relevance AI.
  </Card>

  <Card title="Twilio" icon="phone-arrow-up-right">
    If you have integrated Twilio in Integrations & API Keys, select a Twilio phone number.
  </Card>

  <Card title="Based on country code" icon="earth-americas">
    Automatically selects the appropriate phone number based on the country code of the number being called. Configure country mappings and set a default fallback for all others.
  </Card>
</CardGroup>

## Voice and transcription

| Setting              | Description                                                                           |
| -------------------- | ------------------------------------------------------------------------------------- |
| Voice provider       | The service powering your agent's voice on calls. Currently supports ElevenLabs only. |
| Voice model          | The voice model your agent uses when speaking.                                        |
| Agent voice          | The specific voice your agent uses when speaking.                                     |
| Voice speed          | Adjusts the speaking speed of the agent's voice.                                      |
| Background sound     | Adds a background sound to the call.                                                  |
| Transcriber provider | The service for speech recognition. Currently supports Deepgram only.                 |
| Transcriber model    | The model used for speech recognition.                                                |
| Transcriber language | The language for speech recognition.                                                  |
| Background denoising | Enables background noise reduction while the user is speaking.                        |

## Call behavior

| Setting             | Description                                                                                               |
| ------------------- | --------------------------------------------------------------------------------------------------------- |
| End call            | Allows the agent to end the call when appropriate.                                                        |
| Silence timeout     | Number of seconds of silence before ending the call. Maximum 3600 seconds.                                |
| Voicemail detection | Enables the agent to detect and respond to voicemail. Set the message it says when voicemail is detected. |
| Audio recording     | Enables recording of the phone call.                                                                      |
| Summary prompt      | Enables automatic call summary generation. Customize the prompt used to generate summaries.               |

## Call transcripts

After a call completes, the transcript is available in the call record.

| Action              | Description                                                                                            |
| ------------------- | ------------------------------------------------------------------------------------------------------ |
| Download transcript | Saves the transcript as a file to your device.                                                         |
| Copy transcript     | Copies the full transcript to your clipboard. A "Copied!" confirmation appears briefly after clicking. |
| Download recording  | Saves the audio recording of the call to your device. Only available if audio recording is enabled.    |

***

## Follow along on YouTube

### Getting started with voice agents

<Frame caption="In this video, our Product Manager, Josh Jackson, will show you how to create your own Voice Agent in Relevance AI.">
  <iframe className="w-full aspect-video rounded-xl" src="https://www.youtube.com/embed/TxDqhn-fWf0" title="YouTube video player" allowFullScreen />
</Frame>

***

### Building a customer support Phone Agent

<Frame caption="Learn how to build an AI phone agent that answers customer questions, researches issues, reads screenshots, checks tickets, and escalates to humans when needed.">
  <iframe className="w-full aspect-video rounded-xl" src="https://www.youtube.com/embed/I-qlDMpDKkA" title="Build an AI Phone Agent for Customer Support (Full Demo)" allowFullScreen />
</Frame>