Contract application switching device, contract application switching system, and contract application switching method

摘要

PROBLEM TO BE SOLVED: To enable effective use of a contract for communication over a telephone line. A contract application destination switching device, when a switching time of an application destination of identification information corresponding to one contract relating to communication over a telephone line arrives, a switching source to which the identification information is applied by the switching time. And a switching destination terminal to which the identification information is applied from the switching time, a transmission unit that transmits a notification regarding switching of the application destination of the identification information, and the switching source and the switching destination of the notification. Rewriting for switching the application destination of the identification information from the switching source to the switching destination with respect to the information stored in each of the switching source and the switching destination terminals regarding the contract according to the response from each terminal. , A request unit that requests each of the terminals of the switching source and the switching destination. [Selection diagram] Figure 1