The AT&T 1040 corded 4 line phone system can support up to 16 stations and allows you to store 32 station speed dials. The speaker phone capability comes with digital volume control and allows hands-free communication. Other features include 3 way conferencing, paging, and intercom and call transfer. The power failure protection keeps your saved information safe in case of power The AT&T 1040 corded 4 line phone system can support up to 16 stations and allows you to store 32 station speed dials. The speaker phone capability comes with digital volume control and allows hands-free communication. Other features include 3 way conferencing, paging, and intercom and call transfer. The power failure protection keeps your saved information safe in case of power. 1040 Features: Corded Phone 4-Line Operation Expandable Up To 16 Stations Hearing Aid Compatible Wall Mountable Speakerphone 4-Line LCD Display Dial Display 3-Way Conferencing 32 Station Speed Dial Power Failure Protection Selectable Ringtones Adjustable Receiver, Speakerphone, Headset Volume Controls Intercom Call Transfer Rapid Scroll Auto Line Selection 2 Data Ports Allows the Connection of Fax Machines or Modems 6 Number Redial Hold Mute Flash Line Status Indicator Do Not Disturb 2.5mm Headset Jack DSL Compatible (Splitter / Filters Not Included).