Ooma Telo is a device that provides free and low-cost home phone service and home security using your high-speed internet

All you need to do is connect the Ooma Telo device to your high-speed internet connection, and you can start making regular home phone calls for free. All you pay are applicable taxes and fees. Ooma comes with all of the standard features you would expect: caller-ID, call waiting, Bluetooth capabilities, call logs, low-cost international calling, voicemail, and 911 calling and 911 alerts.
Every call comes with Ooma PureVoice™ technology to ensure clear calls and fewer dropped calls. And, Ooma Telo is also integrated with Amazon Alexa for hands-free calling!