For use with BT Smart Hub 2 Only. Enjoy crisp high quality HD Voice Calling via your internet service leveraging VOIP. Simply register the Handset via WPS to connect, enjoy the freedom of a cordless digital phone. Box contents: Setup guide, Base station, Phone and Power supply. NOTE: If there is a power cut, or internet outage you won’t be able to call emergency services so make sure you have another way to call in an emergency.