| 摘要 |
PURPOSE:To improve the practicability by communicating sounds and data between a radio machine on a host computer side and that on a terminal side by radio and enabling real-time data communication and quick connection without interruption. CONSTITUTION:Radio slave machines 321 to 32n connected to POS terminals 311 to 31n bidirectionally communicate/call with a radio master machine 34 connected to a host computer 33 by time division multiplexing. Consequently, respective terminals 311 to 31n can communicate data with the computer 33 in a real time. Slave machines 321 and 32n and the master machine 34 use transmitter-receives to call with each other with voice, and slave machines 321 to 32n as well as the master machine 34 use transmitter-receivers to call with an opposite party on a public line through a line connecting device 35 with voice. Consequently, the quick contact on business with voice is available between terminals 311 to 31n and the computer 33 and between terminals 311 to 31n as well as the computer 33 and the outside. |
