Cornell Communications is a proud supplier of area of rescue assistance products for healthcare and other industries. Our 4200 Analog Emergency Communication System* is a great rescue assistance system to use in multi-commercial buildings. With just the press of a button, the caller receives voice communication through a public telephone line. The manual walks you through the general information, rescue assistance products, and execution of your 4200 audio/visual system. Count on these informative papers whenever you have questions about any of our 4200 Series rescue assistance systems. Download our 4200 Audio System document to learn the specifics on rescues assistance equipment.