Data volume exchange server, international communication system, data volume exchange method, and data volume exchange program

A data volume exchange method in a data volume exchange server including a terminal IF unit, a data volume exchange unit, and a server IF unit, the data volume exchange method comprising:

• receiving an exchange request for a contract data volume of an own country and a contract data volume of another country from terminals of subscribers having contract data volumes of telecommunication carriers of countries different from each other;
• performing matching of a pair in which another country that requests a contract data volume in one of the received exchange requests matches the own country that provides a contract data volume in another of the received exchange requests;
• and
• instructing communication servers of the telecommunication carriers in the countries to transfer a contract data volume of a matched subscriber of the own country as an exchanged data volume of a subscriber of the other country who is a matching partner.

A non-transitory computer readable medium storing one or more instructions causing a computer to execute:

• receiving an exchange request for a contract data volume of an own country and a contract data volume of another country from terminals of subscribers having contract data volumes of telecommunication carriers of countries different from each other;
• performing matching of a pair in which another country that requests a contract data volume in one of the received exchange requests matches the own country that provides a contract data volume in another of the received exchange requests;
• and
• instructing communication servers of the telecommunication carriers in the countries to transfer a contract data volume of a matched subscriber of the own country as an exchanged data volume of a subscriber of the other country who is a matching partner.