POSITION ENHANCED CELLULAR SYSTEM

摘要

A position enhanced cellular telephone system wherein a cellular telephone device incorporates an RF position finder facility (12), a data modem (12) and controller (12) and a car alarm device (15CA), having a system for flexibly merging the functionality of the telephone device (10), position finder facility (12), data modem (12), controller (12), and car alarm (15CA), reduce overall components and lower cost.