Advanced mobile phone service: The developmental system

A developmental amps system has been implemented in the urban and suburban areas of Chicago. A Mobile Telecommunications Switching Office at Oak Park, Illinois, controls the ten cell sites used in the system. An Equipment Test, serving approximately 100 mobile users, was initiated in mid-1978. A Service Test, involving approximately 2000 tariffed mobile units, will follow the Equipment Test. This paper describes the developmental system, the activities which were prerequisite to the major system test phases, and the status of the system as of July 1978.