Advanced mobile phone service: A subscriber set for the equipment test

The amps mobile telephone subscriber set, which is the mobile customer's link with the switched telephone network, consists of three basic elements: a control unit, a transceiver, and a logic unit. The control unit is the subscriber's primary contact with the amps system and is mounted in the passenger compartment of the automobile, within easy reach of the driver. The transceiver unit, generally mounted in the trunk compartment of the automobile, is attached to the control unit, logic unit, and antennas with appropriate interconnecting cables. The logic unit functions as a master controller for the mobile telephone equipment. A microprocessor-based design, using software implemented logic, governs the primary supervisory functions and furnishes operating flexibility.