METHOD FOR CONTROLLING CALL CONNECTION IN INTER-ZONE COMMUNICATION

摘要

PROBLEM TO BE SOLVED: To prevent the increase of call connection traffic at the time of the time-out of a reservation time by simultaneously transmitting a reservation signal to plural repeater stations when a call connection request between zones exists and unless a null radio line exists in at least one repeater station. SOLUTION: The inter-zone connection requesting signal ZC of a call is transferred to the repeater station 201 and a communication controller 301 and, after that, transferred to the respective repeater stations 202-204. At the time of no null radio line in the repeater station 202 and also at the time of the null one in the repeater stations 203 and 204, the repeater station 202 transmits a null radio line non-existence signal CB to an inter-zone communication controller 301. The inter-zone communication-controller 301 which receives it simultaneously transmits the reservation signal RV indicating that a new communication opperation is prohibited to the respective repeater stations 201-204. The respective repeater stations which receive the reservation signal RV transmit the reservation signal RV to terminal stations inside the zones of the repeater stations. Thus, the respective terminal stations 101-104 recognize that a communication system becomes a reservation state.