| 摘要 |
PURPOSE:To make service possible among plural subscribers and systems dotty in a wide-range region while utilizing frequencies effectively by causing multiple slave stations to multi-access a time division channel and share it. CONSTITUTION:In the communication system consisting of master station 1, slave stations 2 for individual subscribers, multiplex slave station for plural subscribers and multiplex slave station only for repeating, the radio frequency is subjected to time division for the channel and the controlling channel, and subscribers's numbers are assigned to respective subscribers, and further, master station 1 transmits control signals successively to subscribers circularly according to the incorporated control program. Next, when calling requests are issued from slave stations 2-4, master station 1 selects a channel, which is not used at the current time, and assignes the channel to slave stations and connects with channel to the exchange. Next, subscribers turn dial after receiving the dial tone issued from the exchange. A subscriber which issued the dial tone is decoded in master station 1, and channels of the calling subscriber and the called subscriber are connected by the command of master station 1, thereby making service possible. |
