Automated outbound calls: connect Ultravox AI agents to phone calls with Twilio

This workflow transforms n8n into a call automation system, where AI agents can talk directly with people over the phone using Twilio.

This workflow integrates Ultravox AI voice agents with Twilio’s telephony service to fully automate outbound phone calls.

Ultravox generates the AI conversation and audio, while Twilio handles the PSTN connection to the actual phone network, with the two services connected in real-time via a media stream.

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Key Advantages

AI-Powered Conversations – Leverage Ultravox agents to handle natural, real-time dialogues with customers. Seamless Telephony Integration – Twilio ensures reliable phone call delivery worldwide. Flexible Setup – You can easily change the target phone number, agent, or Twilio line directly in the workflow. Scalable Outreach – Automates outbound calls for customer support, sales, or appointment reminders. Step-by-Step Guidance – The workflow includes clear instructions for:

Buying and configuring a Twilio number Creating an Ultravox agent Executing the final call

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