# Inbound calls

In this article you'll be guided through the process of setting up your Voice platform to use the FlowBuilder application to accept inbound phone calls.

# Requirements

In order to receive inbound calls on the FlowBuilder, you'll need the following things:

* A [CM.com Voice phone number](https://developers.cm.com/voice/docs/introduction-1)
* A complete FlowBuilder flow

> 📘 Note
>
> Before starting this process, ensure you have saved your flow to ensure it's up to date and ready for use.

# Configuring your phone number

To configure one of your phone numbers to the FlowBuilder application, navigate to the [Voice Management app](https://www.cm.com/app/voice-management) Numbers page, by clicking the **Numbers** tab in the sidebar on the left.

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Expand the phone number range containing the number you want to configure by clicking on the range.

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Click on the context menu (three horizontal dots) located on the right side of the number you wish to configure, and then click on **Configure number**.

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A popup will appear where you can choose the application. Open the dropdown and select the **FlowBuilder** application.

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Once FlowBuilder is selected, choose one of your callflows to configure for the phone number.

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After selecting the correct callflow, click the Apply button to apply the configuration to the phone number.

> 📘 Note
>
> Please note that it may take up to **15 minutes** for your configuration changes to take effect.