## Documentation Index

Fetch the complete documentation index at: [/llms.txt](https://docs.cognigy.com/llms.txt)

Use this file to discover all available pages before exploring further.

In this tutorial, you will learn how to create a voice AI Agent that uses dial logic. Dial logic lets users select options by pressing the corresponding numbers on a dial pad. This way, the voice AI Agent can guide users through predefined paths based on users’ choices.

## Prerequisites

- You need to have access to a Cognigy.AI account.
- One of the following speech provider credentials is required for testing a voice AI Agent: Microsoft Azure Speech Services, Google Speech Services, or Amazon Polly.

## Add Speech Provider Credentials

To add credentials for a speech provider, follow these steps: After adding credentials for the speech provider, you can create your first voice agent.

## Build a Voice AI Agent

To build a voice AI Agent, follow these steps:

1. **Create a Flow**  
   1. In the left-side menu of the Project, go to **Build > Flows**.
   2. Create a new Flow by clicking **\+ New Flow** in the upper-right corner.
   3. In the **New Flow** window, do the following:
      - **Name** — add a unique name, for example, `Getting Started`.
      - **Description** — add a relevant description, for example, `Getting Started Guide for voice agent`.
   4. Click **Create**.

2. **Add a Set Session Config Node**  
   1. In the Flow editor, click **+** and select **Extensions > VG**.
   2. Create a new Node by selecting **Set Session Config** from the list. The Node appears in the Flow editor.
   3. Left-click the **Set Session Config** Node to open the Node editor.
   4. In the Node editor, go to the **DTMF** section.
   5. In the DTMF section, activate the **Capture DTMF Signals** setting and remove `#` from the **DTMF Submit Digit** field.
   6. Click **Save** Node.

3. **Add a Question Node**  
   1. Below the Set Session Config Node, add a Question Node.
   2. In the Question Node editor, configure the following settings:
      - From the **Question Type** list, select **Number**.
      - From the **Output Type** list, select **Text**.
      - In the **Text** field, enter the following sentences: `Welcome to our customer service line. To learn about payment options, press 1. To contact technical support, press 2.`
   3. Click **Save Node**.

4. **Add a Lookup Node**  
   1. Below the Question Node, add a Lookup Node.
   2. In the Lookup Node editor, select the **Text** type and click **Save Node**.

5. **Add Case Nodes**  
   1. Click the **Case** Node. In the **Value** field, specify `1`, then click **Save Node**.
   2. Below the **Case** Node, add a Say Node.
   3. In the Say Node editor, go to the Text field and specify the following sentences: `We accept the following payment methods: Credit Card (Visa, Mastercard, American Express), PayPal for secure online payments, or Bank Transfer for direct transfers from your bank account. Thank you for contacting us! Have a great day! Goodbye.`
   4. Click **Save Node**.
   5. Click the second **Case** Node. In the **Value** field, specify `2`.
   6. Below the second **Case** Node, add a Say Node.
   7. In the Say Node editor, go to the Text field and specify the following sentences: `Apologies, all support members are busy. Try to contact us later. Thank you for your patience.`
   8. Click **Save Node**.

6. **Add a Hang Up Node**  
   1. At the end of the Flow, add a Hang Up Node.
   2. Click **Save Node**.

Once the voice agent is created, you can test it using the Interaction Panel.

## Test your Voice AI Agent

To test your voice AI Agent, follow these steps:

1. In the existing Flow, open the Interaction Panel by clicking **Chat with your Agent** in the upper-right corner of the page. The Interaction panel appears on the right side of the Flow Editor.
2. Initiate a call by clicking **> Start Call** at the bottom of the Interaction Panel.
3. Listen to the message from the voice agent and then select either number 1 or 2 on the dial pad located in the bottom-right corner of the Interaction Panel.
4. The voice agent will respond with a voice message according to the number you selected, and then finish the conversation. If you want to listen to a specific voice output again, hover your cursor over the message in the Interaction Panel and click **Voice Preview**.

To deploy your Flow in production, you will need to create a Voice Gateway Endpoint and set up a SIP Trunk provider. For these steps, refer to the [Voice Gateway](https://docs.cognigy.com/voice-gateway/overview) documentation.

## What’s Next?

- Familiarize yourself with the core concepts of building AI Agents, such as [Projects](https://docs.cognigy.com/ai/agents/develop/projects-and-flows/projects), [Flows](https://docs.cognigy.com/ai/agents/develop/projects-and-flows/overview), [Nodes](https://docs.cognigy.com/ai/agents/develop/node-reference/overview), and [CognigyScript](https://docs.cognigy.com/ai/platform-features/cognigyscript).
- Enhance your AI Agent’s performance with AI features, such as [NLU](https://docs.cognigy.com/ai/platform-features/nlu/overview), [LLMs](https://docs.cognigy.com/ai/agents/develop/gen-ai-and-llms/llms) and [Generative AI](https://docs.cognigy.com/ai/agents/develop/gen-ai-and-llms/generative-ai), as well as [Knowledge AI](https://docs.cognigy.com/ai/agents/develop/knowledge-ai/overview).
- Explore [test](https://docs.cognigy.com/ai/agents/test/interaction-panel/overview) and [deploy](https://docs.cognigy.com/ai/agents/deploy/endpoints/overview) features.
- Connect your AI Agent to the [contact center](https://docs.cognigy.com/ai/escalate/handovers).

Last modified on June 15, 2026.