The telephone products produced by Advanced American Telephones reflect a long and distinguished history of product excellence dating back over 100 years. Today, its product range is one of the most extensive in the industry, including corded and cordless phones, answering machines, and phone-related accessories.The AT&T Big Button Telephone 953 with Caller ID/Call Waiting function provides you with all necessary features that you may need in your everyday life. Lighted display enables you to view the name, number, time and date of incoming calls at a glance, even those on call waiting. The 99-Name and Number Caller ID History function stores name, number, time and date of up to 99 incoming calls whether or not the phone is answered. Numbers stored in Caller ID history can be dialed directly from memory. If you subscribe to a voice mail service using visual message waiting indicator, the red light will illuminate when you have a message. The light also shows you when new calls are received. Ringer Volume Control allows you to adjust ringer volume from low to high or turns it off. Basic telephone features such as dialing and ringing will continue to work during a power failure.