The Norstar T7100 is an entry level, single-line telephone designed for public areas such as lobbies, cafeterias, hallways, break rooms, or other locations where use is occasional. Key features include: Single-line telephone, one programmable memory button which provides access to any department or person. Tilt-display with integrated Visual Ring/Message Waiting Indicator which enables optimum viewing along with 16-character LCD window providing viewable date, time, and caller information. Compatible with Norstar and Business Communication Manager systems.