Build a Conference Call with Node-RED

This tutorial guides users in building a voice-based conferencing service using Nexmo APIs. To start, users need to expose their local server to the internet, define webhook endpoints for inbound calls and input events, create a Nexmo Voice Application, set up a number to call, and handle call events. The process involves installing Node-RED, setting up credentials, creating applications, linking virtual numbers, and handling events. Users can test the service by calling a predefined virtual number and entering a meeting ID, which will connect them to other users who have entered the same ID.