Ooma is a telecommunications company that offers Voice over Internet Protocol (VoIP) services. It provides a variety of communication solutions for both residential and business customers, including voice calling, video conferencing, and smart home services. Key features of Ooma's residential service typically include unlimited calling within the U.S., voicemail, call blocking, and a mobile app for managing calls. Business plans often include additional features such as virtual receptionists, conference lines, and enhanced call management tools.