Four-line accessory handset is designed for use with AT&T Four-Line Corded/Cordless Small Business System with Extendable Range and displays four lines.
- Design includes push-to-talk speakerphone and 50 name/number Caller ID history, 100 name/number phonebook directory, volume control, ringer volume control, low battery indicator, intercom, mute, redial, hold function and 10-name redial.
- ENERGY STAR certified — meets federal guidelines for energy efficiency.
- Energy efficient — designed to use less energy than alternative products, potentially helping you save money and reduce your carbon footprint.