Ooma 

Ooma Inc is a communications services company. It is a smart software-as-a-service (SaaS) and unified communications platform that delivers voice and collaboration features, including messaging, intelligent virtual attendants, and video conferencing, and residential phone service provides PureVoice high-definition voice quality, advanced functionality and integration with mobile devices. Its services rely upon the following main elements: multi-tenant cloud service, on-premise devices, desktop and mobile applications, and calling platforms. It generates revenues from the sale of subscriptions and other services.