Arris TM822G Cable Modem Plus Voice/Telephone Over Cable Box - Battery Backup

Arris TM822G Cable Modem Plus Voice/Telephone Over Cable Box Includes Battery Backup and all cables/wires shown in photos. Please check with your cable company for modem compatibility prior to purchasing. Please ensure this has all of the components you need prior to purchasing. In good working condition. From a non-smoking and pet-free home.