AT&T ML17929 2-Line with Caller ID/Call Waiting, Black

2-line operation offers flexibility for your home or business Built-in speakerphone lets you multitask as you talk. Caller ID/Call Waiting lets you know who's calling. Features a 99 name/number Caller ID history for easy scrolling and callbacks. Service required from your local phone company. 3-party conferencing for quick remote meetings. 18-number speed dial for your most frequently dialed or emergency numbers. 100 name/number phonebook keeps your contacts handy. Includes selectable ringer tones for each line . Energy efficient - designed to use less energy than alternative products, potentially helping you save money and reduce your carbon footprint.