Call Flow Builder
Introduction​
Call Flow Builder is a no-code visual tool for creating and managing voice applications directly in the Dashboard.
It features a simple drag-and-drop interface for creating complex call flows with multiple branches and decision points. All elements of the call flow are represented as nodes in a tree structure. You can easily add, remove, and rearrange elements in the call flow using the visual interface.
A sample Call Flow showcasing input-gathering, recording, AI Agent, and TTS features.
Add or remove any element from the call flow by dragging it into the desired location, and define links between them using the connection lines.
Extend each flow by integrating external APIs, or by using SignalWire Markup Language (SWML). Call Flow Builder also offers built-in versioning to streamline testing multiple configurations.
Under the hood, Call Flow Builder generates valid SWML (SignalWire Markup Language), meaning all the power of SWML is available whenever you need more control over your call flows.
Get started​
To get started with Call Flow Builder, open the Tools tab in the left menu of your SignalWire Dashboard.
Check out this brief demo to see how to add, configure, and connect nodes in Call Flow Builder.
Creating a New Call Flow​
To create a new call flow, click on the Add New button in the Call Flow Builder section of the Dashboard.
From here, you can give your call flow a name, and then click Save to create the new call flow.
After creating the call flow, the Call Flow will show up in the list of call flows in the Dashboard.
Creating a new Call Flow.
Create a Call Flow​
Once a Call Flow has been created, you can click on the More Options button to open the Call Flow Builder interface.
From here, click on the Edit option to open the Call Flow Builder page.
Editing a Call Flow.
Add a node​
When you first open a new Call Flow, you will see a canvas with a single node: the Handle Call node. This node is the entry point for incoming calls and serves as the start of all Call Flows. From here the Call Flow Builder interface allows you to create and manage call flow nodes using a visual drag-and-drop interface.
Every node has a single input connector on the left, and one or more output connectors on the right. These connectors allow you to connect nodes together to create flows and logical relationships.
Add nodes to the Call Flow by dragging them from the left-hand panel and dropping them onto the canvas. Starting with the Handle Call node, you can connect a node by clicking and dragging from the output connector (right side of node) to the input connector (left side of node) of another node. You will see an arrow connecting the two nodes, indicating that they are connected.
Adding a new node to a Call Flow.
Configure nodes​
Some nodes have configuration options that can be set by clicking on the node. This will open a configuration panel where you can set the options for that node. For example, the Play Audio or TTS node allows you to select an audio file or enter text to be played to the caller.
Configuring a node in a Call Flow.
Delete a node​
To delete a node, you can click on the delete icon located on the right side of the node.
Additionally, you can delete a node if they have configuration options open by clicking the Delete node button in the configuration panel.
Deleting a node from a Call Flow.