This is a commercial grade wall telephone pre-programmed to autodial 911 when taken off-hook (lift off the handset). It's designed to operate in the most demanding work environments. It cannot be used to make outbound calls because the built-in dialer will auto dial the pre-programmed phone number (911). It comes with instructions to re-program the hotline dialer to auto dial any other phone number, including pauses between numbers. Since 1995, HQTelecom has delivered outstanding value and reliability to consumers around the world. If you need a no frills telephone at a competitive price you are at the place. Wall-mounted Telephone with Keypad Features: Raised button keypad designed for repeated use Metal back panel Traditional bell ringer (requires 48 Volts) Handset volume control Hangs on a standard wall phone plate Poly Carbonate Hook Switch for Durability (cheaper versions of this telephone do not have a durable hook switch and will not last under constant use.) Works on all analog phone lines (PSTN, POTs, VOIP) FSK or DTMF compatible Telephone line powered Comes with wallplate for easy installation Weight: 1.9 lbs Phone Dimensions: 8.5" long x 4" wide x 4.5" depth (with handset in place) Handset cord stretches up to 10 feet Fully compatible with Viking Electronics VK analog series phones. Wall-mounted Telephone with Keypad Applications: Emergency phones Medical Alert phones Emergency elevators Courtesy phones in airports, schools, airlines, hotel lobbies, car rentals, etc.