| 摘要 |
PROBLEM TO BE SOLVED: To effectively utilize a line by taking notice that a place where a portable telephone repeater is installed is a radio blind zone so as to positively utilize this fact. SOLUTION: A composer 7, a data sending device 11 and a data input device 12 are added to output a private branch broadcast signal 25 utilizing a frequency channel except for that assigned to a radio zone a terminal building 1 belongs to from the data sending device 11 to send it from an antenna 4 into the terminal building 1. This private branch broadcast signal 25 is individually received by many portable telephone terminals 5 within the terminal building 1 as information on the leaving/arriving of public traffic facilities, etc. |
