The authors' project is concerned with the development of a monitoring system for elderly people living alone in rural areas. The monitoring system was developed and introduced in Kawai village, Shiwa town and Tono city in Iwate Prefecture. The aim was to develop a new type of monitoring system which would reduce the initial cost and increase operability. A key feature of the system was that it used standard telephone terminals and computer telephony technology. The results of the experiment, carried out in Iwate and Aomori Prefectures in Japan, showed improved operability. Based on the results, this paper estimates the required number of telephone lines for an increasing number of users in the future.
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