This document is the operating instructions for the Panasonic KX-FPG391 5.8 GHz Expandable Cordless Phone System with FAX and Copier. It provides information on how to use the unit and the specific features it offers. The model is designed for use in the U.S.A. The document also includes the location of controls and a description of each button. Additionally, the unit is compatible with Caller ID and requires a subscription to the appropriate service.