DESC: Expandable Corded/Cordless Combination System with Digital Answering System, Dual Keypad and Call Waiting/Caller ID. Power failure operation through corded base, IntegriSound life-like audio, 100-name phonebook with 2 phone numbers per name, up to 100-number Caller ID memory, handset speakerphone, headset compatible, 4-way conferencing, base to handset call transfer, intercom between handsets, transfer phonebook memory between handsets, room/baby monitor, DirectLink 2-way radio feature, call screening, trilingual menus and voice promts, new message LED indicator, time and date stamp, call and memo recording, animated display, backlit display, dual Caller ID display, clock display, IntegriSound natural sounding answering system, 20 ring tone options, personal ring feature, do not disturb setting, lighted keypad, belt clip included, last 3-number redial, mute/hold features.