Vehicle-mounted wireless phone

A vehicle-mounted wireless phone provides for establishing full duplex voice communication with a call monitoring center. The phone is designed to be flush-mounted in a dashboard or console of a motor vehicle. The phone has a single activation button which, when pressed one time, initiates the following functions: (1) electrical power is provided to a wireless transmitter and receiver, (2) the wireless receiver is activated to search for an available channel from among A or B system wireless channels, (3) a telephone number is accessed from memory, and (4) the wireless transmitter is activated to establish communication with the call monitoring center. Since all functions are initiated by pressing a single activation button, communication with the call monitoring center may be established simply and speedily, even under stressful conditions. To prevent inadvertent activation, the activation button is protected by a retractable door built into the phone housing.