(2 Year Warranty) 4 PORT SWITCHING DEVICE (Phone, Answering, Facsimile, Modem) * 3 PORT DISTINCTIVE RINGING (3 Separate phone Numbers) TWO-LINE COMPATIBILITY with One or Two phone Lines, Even Two-Line Telephones COMSCAN BUILT-IN DOCUMENT SCANNING Feature Converts Your Fax Into a Scanner *REMOTE MESSAGE NOTIFICATION Automatically Sends a Special Tone Message to any Desired Telephone Number Every Time You Receive a Voice Message, Fax, or Modem Data Transmission * Choose "Office" or "home" Mode (Phone Company Voice Mail and Caller ID Required) * choose the 7500 if You Have Two Lines, or a Single Dedicated Office Line and Need to Connect a Phone, Answering Machine, Fax, and Modem