| 摘要 |
<p>A telephone regulation system (70, 80, 180, 220) to regulate usage of a telephone terminal (50, 200, 230) that carries out conversation using a radio wave includes an approach recognition device (34) provided at the neighborhood of an approach path to a predetermined region to transmit a first command through a weak wave to a portable telephone terminal (50, 200, 230) passing through the neighborhood and entering the predetermined region, and a departure recognition device (80) provided in the neighborhood of a departure path from the predetermined region to transmit a second command through a weak wave to a telephone terminal (50, 200, 230) passing through the neighborhood and departing from the predetermined region.</p> |
