US Patent 7231200 Personal emergency communication system

A personal emergency communication system includes a user-carried portable communication unit having a single button, which when depressed by the user, wirelessly sends a call request signal to a base unit. The base unit initiates a telephone call through a dial-up network to an emergency response center and places an operator at the emergency center in wireless voice communication with the portable unit when the call is connected. A speech synthesizer operating in combination with automated voice messages stored in the base unit are used to advise the user of the status of the call, and to provide the user with verbal confirmation that functional systems of the base unit are operating properly.