| 摘要 |
PURPOSE: A device for relaying a credit information inquiry is provided to share a transmitting/receiving line for a credit information inquiry and unmanned guarding, supply a credit information inquiry service without payment, and replace a wireless line by a wire line automatically when the wireless line is interrupted. CONSTITUTION: An integrated terminal(60) transmits credit information inquiry data being inputted from a credit card inquiring device(30) and detection data being detected from sensors(S1,S2,..,Sn) to a control system(50) through a wireless data communication network(40), and controls for transmitting the data to the control system(50) through a PSTN(public switched telephone network) when the wireless data communication network(40) is detected as an interruption. The control system(50) transmits the credit information inquiry data to a credit information server(70) and transmits data with respect to an inquiry result to the integrated terminal(60) again, and generates an alarm signal in accordance with the detection data. The credit information server(70) transmits and receives data to the credit card inquiring device(30) through the medium of the integrated terminal(60) and the control system(50) through the wireless data communication network(40) and the PSTN.
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