Aastra 480e Single Line Analog Screenphone Charcoal Large eight-line backlit display with six display keys and contrast control Call Display, Visual Call Waiting, and Visual Call Waiting Options Speakerphone with Mute Headset Compatible - the improved headset interface allows you to determine how to make and receive calls with a headset - headset only or a one touch toggle between headset/handsfree speakerphone Functionality and scren appearance can be customized using exclusive Web Configurator program