The Ooma Telo provides crystal-clear nationwide calling for your home phone service. It connects to your high-speed internet and works with any home phone, offering an easy installation process.This system delivers superior voice quality through PureVoice HD technology, ensuring a consistently great calling experience. It includes essential features such as voicemail, caller-ID, call-waiting, and 911 calling with text alerts.For added convenience, the Ooma mobile app allows you to take your Ooma service on-the-go. The Ooma Telo can also integrate with optional Ooma smart security sensors to monitor your home and notify you of detected activity.