| 摘要 |
PURPOSE: To ease the burden of a user at the subscription by easily changing a pre-paid contract to a post-paid contract, and to reduce the arrears of a communication fee without limiting the type of devices when making a pre-paid contract. CONSTITUTION: A provider generates provisional edition customer information based on the user's subscription application (S101), and registers it in a data base 55 (S102), and registers it in a pre-paid management system. The pre-paid management system sets a network for pre-paid sue for the customer (S103). Thus, the user can use a service under the pre-paid contract. Afterwards, when the user is identified, official edition customer information is registered in a data base 51 (S108), and any service under the pre-paid contract is stopped, and a service under a post-paid contract is started. Also, when the arrears of a communication fee is generated under the post-paid contract, the post-paid contract is automatically changed to the pre-paid contract.
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