Add hands-free mobility to your SIP communications with this DECT base station and cordless handset. Its expandable design allows you to connect up to six additional handsets per base station, each with its own extension or unique phone number. The base station can be configured for up to six lines and supports up to four active, concurrent calls. Display and keypad are both backlit for reliable use in low-light environments. With 10 selectable ringtones, you can choose your favorite melody to signal when there's an incoming call. Base station and cordless handset also include a 200-name phonebook, three-party conference, call blocking, keypad lock, handset locator and more.