RADIO DATA COMMUNICATION METHOD AND EQUIPMENT THEREFOR

摘要

PROBLEM TO BE SOLVED: To improve availability of a communications line by providing the function for exchanging data through a radio communications line at the side of a radio interface and also the function for exchanging data through a digital network packet communications line and a digital network communications line at the side of a digital network interface. SOLUTION: The radio packet communications line between a mobile station and a radio communications equipment is established by a radio communications line control part 14 by the procedure of packet exchange. Then, a digital network packet communications line assigning request is executed by a command from a control part 13 to a digital network packet communications line control part 18. Then, data communication is started and the part 13 monitors a data amount exchanged by way of a radio data communication control part 15 at fixed time interval. When the data amount exceeds a set value, the establishment of the digital network communications line between the radio data communications equipment and a data communications equipment where the digital network packet communications line is established is instructed to a digital network data communication control part 16 by the procedure of line exchange.