Automated Outbound Calls: Ultravox AI + Twilio Integration

This n8n workflow transforms your automation into a powerful call center system, enabling AI agents from Ultravox to engage in natural phone conversations via Twilio's PSTN network. It starts with a manual trigger, sets key parameters like agent ID, Twilio caller number, and destination phone, then initiates an Ultravox session to generate a WebSocket join URL for real-time media streaming. Twilio places the outbound call, bridging the AI-generated audio directly to the recipient's phone.

Key benefits include scalable AI-powered outreach for customer support, sales leads, or reminders, with seamless global delivery through Twilio. It's highly flexible—easily swap agents, numbers, or configurations without coding—and includes step-by-step setup for Twilio numbers and Ultravox agents, saving hours of development time.

Ideal use cases: Automating follow-ups for support tickets, qualifying sales prospects via voice AI, or sending personalized appointment reminders. This integration unlocks human-like interactions at scale, reducing costs over live agents while boosting engagement rates.