| 摘要 |
PURPOSE:To prevent data error by making the press switch operation of all mobile stations and a commanding station ineffective and inhibiting a voice signal input in making data communication between data terminals connected to the mobile stations and a host computer. CONSTITUTION:When a data transmission line setting signal is transmitted to a control section 20 of a mobile station 6-1 from a data terminal device, a data cell call signal including a code number of the command station 8 is transmitted to make a press switch ineffective and a gate 16 is turned off to interrupt the input of a voice signal. When a control section 21 of the command station 8 receives the said cell call signal, the press switch is made ineffective, the gate 16 is turned off to interrupt the input of the voice signal. When a data transmission request signal is transmitted from a data terminal device, a transmitter 11 turns on the control section 20, the data input is made effective and a data transmission enable notice signal is transmitted to a data terminal device. When a data is transmitted from the data terminal, it is transmitted to the command station 8. When the command station 8 receives the data signal, a data output request signal is transmitted to the host computer and then the reception data is transmitted succeedingly. |
