Build a Voicemail with Ruby on Rails

"Create your own voicemail application powered by the Nexmo Voice API and Ruby on Rails." This tutorial enables users to create their own voicemail applications using the Nexmo Voice API and Ruby on Rails, allowing customers to leave messages for each other. The process involves setting up a Vonage API account, purchasing a virtual phone number, creating a new Rails application, and configuring the application to receive and play back voicemails. The tutorial covers key steps such as creating routes, defining controller actions, and generating models, providing users with a comprehensive guide to building their own custom voicemail applications.