SYSTEM FOR SEEKING WANDERING-ABOUT AGED PERSON

摘要

PROBLEM TO BE SOLVED: To obtain a system for seeking wandering about aged person in which the position information of a mobile station can send to a base station, even during a speech and transmission reception of the position information does not disturb conversation. SOLUTION: This system for seeking aged person wandering about is provided with a mobile station 1000, that alternately outputs a conversation voice signal and a GPS signal converted into a DTMF signal and with a base station 2000, having a DTMF signal detection section 152, that separates the signal from the mobile station 1000 into a voice signal and a DTMF signal. The base station 2000 can acquire the voice and the position information at the same time.