| 摘要 |
PURPOSE:To effectively utilize the channel of a radio relay station by, when slave stations to execute a mutual call are the slave stations to which a self- station executes a relay action, processing the mutual call with an exchange in the self-station. CONSTITUTION:A radio relay station 402 decides the coincidence and non- coincidence of a pair of mutual subscriber numbers in two incoming control channels at the time of radio-relaying the signal of the incoming control channels radio-transmitted by slave stations 404 and 405 relay-operated by the self-station to a master station 401, and as a result, when the pair of subscriber numbers to coincide are the subscriber numbers of a subscriber terminals to belong to two different slave stations, the radio relay station 402 informs the master station 401 of the pair of subscriber numbers. After a confirmation response from the master station 401 to the information is received, the mutual call between the subscriber terminals of the pair of subscriber numbers is executed with the exchange in the self-station, and simultaneously, the channel set between the master station 401 and them is released. |
