Inbound Call

Inbound Call prepares a flow to be triggered by an incoming call.

The Inbound Call action on a blank board

Note: The functionality of this action is voice-related only.



Once your flow is successfully deployed, you can assign a number to it. Click the Assign Number(s) button to select the inbound number, or what number a customer would dial, to reach your flow.

The Assign Numbers button from the Inputs section of the Configurations Panel is on the left, and the Number Assignment pop-up is on the right


Assign a Number

Note: If your flow is not deployed the Assign Number(s) button is disabled and you can’t assign a number to it yet.

  1. Click on the Inbound Call action.

  2. From the Configurations Panel on the right, click Assign Number(s).

  3. In the Number Assignment pop-up window, search or scroll through the listed numbers to find the correct one.

  4. Click the check box next to the number you want to use. The Assign Flow and Clear Flow(s) buttons appear at the top of the numbers table.

  5. Click the Assign Flow button.

  6. After the green success message appears, exit the pop-up window. The assigned number now appears in the Inbound Call action’s Inputs section.

  7. Click Save and Deploy.

Congratulations!  Your flow is ready to use!



  • We recommend calling the assigned number to test out the experience. It may take a few minutes after assigning a number and re-deploying your flow for it to be live.

  • Each number can only be assigned to one Inbound Voice and one Inbound SMS flow (displayed on the Number Assignment pop-up). If the number you want to assign to your flow is already in use, you can override the current assignment by clicking the check box next to the number, then Clear Flow(s). This will break the previously assigned flow, so we recommend using a brand new number (unless you are 100% sure you no longer need the previously assigned flow).


For more information, check out:

  • Menu Tree: This action is often used following the Inbound Call trigger

  • Voice Transfer with Smart Routing: Try out this prebuilt template, beginning with the Inbound Call trigger, rather than building a new flow from scratch