Crystal-clear nationwide calling for free and low international rates. Pay only monthly applicable taxes and fees. #1 rated home phone service for overall satisfaction and value by a leading consumer research publication. Ooma Telo works with Ooma Home Security sensors to monitor your home and contact you when activity is detected. PureVoice HD delivers superior voice quality for a consistently great calling experience. Includes nationwide calling, voicemail, caller-ID, call-waiting, 911 calling and text alerts. Download the Ooma Mobile HD app and take your Ooma service on-the-go. Easy install in minutes; works with your high-speed Internet and any home phone