| 摘要 |
PROBLEM TO BE SOLVED: To prevent the occurrence of a case that amplification in a slave station of a digital system also delays due to a long time required for call connection in an analog system as compared to the digital system, if the notification of received earthquake information is intended to start on completion of the call connections of both systems by simultaneous amplification and transmission to all disaster prevention radio slave stations of both analog and digital systems.SOLUTION: Data received from the outside of a master station facility is recorded by a plurality of voice recording/reproducing units A-C, and connections between a digital radio device 2c and a digital slave station 5, between an analog radio device 2d and an analog slave station 7, and between a telephone response server 2e and each residence telephone 10, etc. are started substantially simultaneously. In order from the devices of which connection is completed, the recorded data is transmitted to the connection destination successively. |
