The AT&T 1070 corded 4 line phone system can support up to 16 stations and allows you to store 32 station speed dials. The 1070 phone is DSL compatible and the large display screen makes caller information easy to read. Each line has its own light indicator and distinct ring tone.Numbers stored in the caller ID history can be dialed directly and, with the call waiting caller ID capability, you can see who is calling even when already on the line. Other features include 3 way conferencing, ports for fax and modem, intercom, and do not disturb indicator.1070 Features: Corded Phone 4-Line Operation Caller ID / Call Waiting Expandable Up To 16 Stations Hearing Aid Compatible Wall Mountable Speakerphone 4-Line LCD Display Dial Display 200 Station Name / Number Caller ID Memory 3-Way Conferencing 32 Station Speed Dial Power Failure Protection Selectable Ringtones Adjustable Receiver, Speakerphone, Headset Volume Controls Intercom Call Transfer Chain Dial Rapid Scroll Auto Line Selection 2 Data Ports Allows the Connection of Fax Machines or Modems 6 Number Redial Hold Mute Flash Do Not Disturb 2.5mm Headset Jack DSL Compatible (Splitter / Filters Not Included)