ATT DECT 6.0 Cordless Phone With Digital Answering System, CL82415, 4 Handsets Expandable phone system Includes cordless base station with digital answering system plus 4 cordless handsets and is expandable to 12 handsets. DECT 6.0 digital technology Produces interference-free, secure calls with clear sound. Extra-large screen Offers an easy-to-read display. Call waiting/caller ID with 50 name-and-number memory Lets you monitor your incoming calls, even when you are out. Caller ID announce speaks the name and number of the incoming caller for ease of use when you aren't near the phone. ***Call waiting and caller ID require additional service through your local phone company.*** Push-To-Talk, HD Audio, Simulated Full-Duplex Handset Speakerphone, Wall-Mountable, Backlit Keypad and Display, Quiet Mode, Call Block, Call Screening, Call Intercept, Remote Access, Intercom between Handsets, Volume Control, Last 10 number Redial, Mute, Answer any Key, English, Spanish and French Setup Menu.