---
title: "Voice AI (Phone Numbers)"
description: "Setting Up Your Bot as a Voice Agent"
url: https://support.agentsuite.ai/en/articles/21-voice-ai-phone-numbers
collection: "Learning the Software -Beginner"
updated: 2026-10-27
language: en
---

# Voice AI (Phone Numbers)

Setting Up Your Bot as a Voice Agent

## **Introduction**

This guide shows you how to activate your AI assistant as a voice agent. You’ll learn how to connect a phone number, set up outbound calling, and carry context between SMS and calls using Agent Suite automations and custom fields.

 **1\. Select and Add a Voice**

-   Go to the top-right corner and click the **Voices** icon (three bot heads).
    
-   Choose from existing voices or click **Import Voice** to pull one from ElevenLabs.
    
-   Search a voice (e.g., “Zuri”), click import, and it’ll appear in your voice list.
    
-   To clone your own voice:
    
    -   Upload an MP3 or MP4 (under 2 minutes).
        
    -   Go to the **Cloned** tab to find your custom voice.
        

## **2\. Connect a Phone Number**

-   Click the **Phone** icon (top-right).
    
-   Select an existing number or click **Buy Number** to purchase a new one using an area code.
    
-   If an area code isn’t available, try another or wait until one is.
    
-   Click the three dots on a number → choose the assistant you want to connect it to → save changes.
    
-   The number is now live and linked to your bot for inbound calls.
    

## **3\. Make an Outbound Call via Workflow**

-   Create a workflow and use the action: **Make AI Call**.
    
-   You’ll need your assistant’s ID. Go to your assistant and click the copy button next to the ID (top-left).
    
-   Paste that ID into the workflow’s assistant ID field, save and publish.
    
-   Add any trigger you want (e.g., form submission) to start the call.
    

## **4\. Create Custom Fields for Call Context**

These help maintain conversation history across SMS and voice:

-   **Message History** – large text field
    
-   **Last Message** – text field
    
-   **Last Call Transcript** – large text field
    
-   **Last Call Summary** – large text field
    
-   **Recording URL** – text field
    
-   **Call History Summary** – large text field
    
-   **Accumulated Call Time (sec & min)** – numerical fields
    

## **5\. Set Up a Post-Call Webhook**

-   Create a new workflow with an **Inbound Webhook Trigger**.
    
-   Copy the webhook URL and go to your assistant’s **Call Settings**.
    
-   Paste the webhook URL into the **Post Call Webhook** field and send a test call to generate the mapping reference.
    
-   Back in your workflow, use the mapping reference to access call data like summaries and recordings.
    

## **6\. Map Webhook Data to Contact Fields**

-   Find the contact using **Contact ID** sent from the webhook.
    
-   Use a GPT step to create a **Master Call History Summary**.
    
-   Combine the new call summary with previous summaries.
    
-   Update contact fields:
    
    -   Call Summary
        
    -   Call Transcript
        
    -   Recording URL
        
    -   Call Time (Seconds & Minutes)
        

## **7\. Carry Message History Across Channels**

-   Create a trigger for **Customer Replied (Any Channel)**.
    
-   Append the message body to **Message History** field.
    
-   Update **Last Message** field with just the new message.
    
-   In outbound calls, use **Custom Variable 1** to pass `Message History` so the bot has full SMS context.
    

## **8\. Add Context in Prompt Using Custom Variables**

-   In your outbound call workflow, pass `Contact.MessageHistory` into Custom Variable 1.
    
-   In the assistant prompt, reference `{{ custom1 }}` to give the AI the full message context.
    
-   Useful when switching from SMS to voice and maintaining conversation flow.
    

## **Tips**

-   Use short, clean names for custom fields to stay organized.
    
-   Always test the webhook connection before finalizing the workflow.
    
-   Use the logs inside the assistant to see how post-call data is being received.
    
-   Clone voices under 2 minutes long for best results.