CORTELCO ITT-2740 4-line Operation 7 Series 4-line Telephone Body Color: Black Additional Features: Expandable to 4 Lines and 16 Stations Caller ID on Call Waiting Caller ID Directory Dial Visual Message Waiting Indicator Paging (Individual or All Page) Station Status Indication Large Backlit Liquid Crystal Display Memory Dial Toll Restriction Call Privacy (On/Off) Redial (Last 5 Numbers) Do Not Disturb Automatic Line Selection Call Timer Private Line Compatibility Static Memory Distinctive Ringing Dual Color Line Status Flash/Hold/ Mute Predialing Hearing Aid Compatible Caller ID Memory: 50 Names and Number Caller ID Directory Display: Large Backlit Liquid Crystal Display Connections: 2.5mm Headset Jack Placing / Mounting: Desk or Wall Mountable