| 摘要 |
The invention concerns a method using mobile terminals and an operating infrastructure having at least one call centre, the portable terminals being assigned a unit credit, determined before they are purchased and having means for calling only one of said call centres. When the first call is made from the terminal, a user identification is emitted therefrom, a temporary subscriber number is transmitted from the call centre to the terminal enabling the call from said terminal through the network and said number is stored at the call centre.
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