| 摘要 |
PURPOSE:To eliminate the area dependency of a communication equipment (slave station) by ensuring the unitary control for the transmission pattern of the call signal sent to a subscriber terminal connected to the communication equipment (slave station) at a master station when the voice data, etc., are transmitted by the satellite communication, etc. CONSTITUTION:In a satellite communication system, the SCPC (signal carrier per channel) communication is performed by an allocation request multiple access system that secures the effective use of frequency. Then two of those idle frequencies pooled for the slave stations 2 and 3 are allocated to these stations 2 and 3 by a master station device 1 when the station 2 gives a call connection request to the station 3. At the same time, the device 1 detects the area where the station 3 is located based on the dial number of the station 3 sent from the station 2 and refers to the area information data stored previously to specify a pattern of the call signal. This pattern number is sent to both stations 2 and 3. Then both stations 2 and 3 collate the pattern numbers under the call connection processing with each other between both stations. When the coincidence of pattern numbers is secured between both stations, a call signal is transmitted from the slave station 3 where a call arrived. |
