- Automatic Noise Canceling (ANC) feature for clear audio in noisy environments- Meets the latest ASME A17.1 code when used with a Viking LV-1K Line Verification Panel, see DOD 246- Meets ADA requirements for Emergency Phones:- Automatically lights the Call Connected LED- Transmits a unique location ID code or voice announcement- Grade 2 Braille label for the visually impaired- Non-volatile digital voice announcer with 16 seconds of voice memory- Advanced call progress detection- Handsfree operation- Phone