PURPOSE: To attain remote exchange service with high quality to decentralized subscribers by connecting a master station to a time division exchange and allowing its control function to connect a channel of a radio line to plural slave stations with request assignment multi-dimensionally to form a groups to plural remote points.

CONSTITUTION: The multi-direction multiplex radio communication system consists of a master station 2 connected to a time division exchange 1 and plural slave stations 3A∼3N conducting communication with the master station 2. The master station 2 is provided with a code converting circuit 4, a transceiver 5 and an antenna 6. Further, a multiplex converting circuit 9 is connected to a transceiver 10 of the slave stations 3A∼3N, and the circuit 9 is controlled by a control circuit 12. Further, subscriber circuits 7a∼7n are connected to the circuit 9 via plural coders/decoders 8a∼8n and the circuits 7a∼7n are controlled by the control circuit 12. Then the channel of a radio circuit is connected to the slave stations 3A∼3N with request assignment multi-dimensionally to offer the remote exchange service with high quality to decentralized subscribers.