| 摘要 |
PURPOSE:To clarify the payment classification of a call charge by generating call history data by line use charge information of the other party at every telephone service and writing it successively in a history accumulation file, and outputting a call history report based on this data group. CONSTITUTION:In a RAM 23, a history accumulation file for accumulating call history data consisting of call charge information, and a call charge counter are formed. A CPU 21 controls an ISDN interface 26 and monitors a line, generates the call history data and stores it in the history accumulation file. Also, line use charge information from an ISDN exchange is added to the call charge counter. That is, a report number is inputted in a state that an account settlement mode is selected by a mode switch 10, and the CPU 21 reads out the call history data from the head data and converts it to printing data, and allows a printer 13 to print it. In such a way, when there is a call of a digital telephone set 16, the call history data is stored and accumulated, and the call charge is added up by the call charge counter. |
