Charging server and charging method

摘要

In a charging server for charging a toll for information transmission and reception occurring when predetermined information is transmitted to and received from an information server 40 by an information terminal 20 via a communication line 30 according to a communication toll occurring when the communication line 30 is used and an information toll occurring for the information communicated on the communication line 30, a return toll in held specific information toll and held specific information communication toll is calculated based on a determination signal as to whether or not at least one piece of the specific information is adopted as display information of the information terminal 20, and a toll is charged based on the previously calculated information toll and the return toll.