Check the listing for details. AT&T ML17939 2-Line Corded Speakerphone with Caller ID and Digital Answering...O. Color: Black, Condition: Used. Listed at 25.00 USD. This AT&T ML17939 2-Line Corded Speakerphone is the perfect addition to any home or office telephone system. With its speakerphone feature, you can enjoy crystal-clear audio quality when making or receiving calls. The phone also comes with caller ID and a digital answering system, making it easy to manage incoming calls and stay organized. The AT&T brand is known for its reliable and high-quality communication services, and this corded speakerphone is no exception. Its sleek design and user-friendly interface make it easy to use, while its durable construction ensures that it will last for years to come. Whether you need a phone for your home office or business, this AT&T corded speakerphone is the perfect choice.