System for roaming payment using smart card

The invention relates to a pre-paid card roaming billing system, receiving a first station prepaid card service request information from the relay server, and extracts the first station a prepaid card identification data and the charge account data contained in the prepaid card service request information, extracting the first station communication company server to assign a pre-paid card identification data and the physical space to insert the charge account information data to generate a USIM chip and the first station, the first station transmits a USIM chip information to the relay server; The first station pre-paid card from the first station to matching receiving a first station prepaid card Key issuing information from the relay server, and the first station prepaid card Key each prepaid card identification data and the charge account data included in the issuing information to correspond to each other use of the first station and issuing the prepaid cards to be the first station the first station for transmitting first station issuer prepaid card issue information including the details of the prepaid card issuing server to the mediation server; And the second one first station Prepaid Card Services received the first station USIM chip information by sending the requested information to the first station operator server, and the first station the first station for prepaid cards issued prepaid cards Key received from the first station clients and transmitting the issued first station prepaid card Key issues generated information to the first station issuer server, but the storage and management of the first countries prepaid card issuing information received from one country issuers server prepaid card management DB, the first station via the mobile communication service provider server to index the charging account corresponding to the first station prepaid cards first station prepaid card from the payment request information issued by the information received from the first station the client, the first country in the amount of charge in the index, charge accounts, It includes a mediation server to transfer the payment amount requested to complete the first station prepaid card payments generated by subtracting the information contained in the prepaid card payment request information to the first client station via a first station carriers servers. According to the present invention as described above, the intermediate and the server was installed to manage and administer the prepaid card Key issue information or prepaid card issuing information for prepaid cards issued by the applet (applet) for country-specific pre-paid card standard setting, specific country the prepaid card activated for use in other countries, through an intermediary server for prepaid cards issued, and by converting to comply with the charged amount charged to the prepaid card payment prepaid cards in other countries, the national currency, issued by certain countries in the the payment through prepaid cards and streamline the process for other use in the country of prepaid cards issued, as well as groups issued in other countries mediating the prepaid card payments between countries to allow payment as well, and in certain countries through specific the effect to not confined to the country.