Uploaded August 2025 | Updated September 2026, 30 minutes ago

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Take your WhatsApp customer experience from chat to a live voice call in a just a few minutes. In this walkthrough, we configure a WhatsApp sender for voice, build a Twilio Function with TwiML to handle the call, create a WhatsApp content template with a call button, and send it via the Messaging API using Node. Stick around to see the end-to-end demo, including the actual call.

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Key Topics:
📱 Configure a WhatsApp sender for voice calling
🔘 Create a WhatsApp content template with a Call-to-Action button
🧩 Personalize templates with variables
🧑‍💻 Send the template via Node.js and the Twilio Messaging API

Learn More:
Twilio WhatsApp Business Calling docs: twil.io/wabc-docs

Chapters:
00:00 Intro
00:32 Create a Twilio Functions service
01:05 Build the call TwiML with Say and Play
01:40 Assign the TwiML app to the WhatsApp Sender
02:15 Create a WhatsApp Call-to-Action template
03:39 Send the content template using Node.js