FullCourt is a telephony app that connects mobile devices with web services. It transmits voice and other web-based messaging system to apps. The FullCourt service is a RESTful API that can be scaled and recombined to fit each developerâ€™s particular needs. The API exposes the serviceâ€™s entire telephony functionality. Developers can use the API to send call requests and retrieve user information. The API returns XML-encoded data.