DESC: This versatile cordless phone system can expand up to four lines, and works as a key style system without the central box. It's very simple to install — just plug it into your phone lines and go. Enjoy the convenience of 17 mailboxes, a 16-handset expandability, and 100 minutes of recording time on the digital answering system. Ideal for high-traffic residences, dorm-style collectives or small office environments.