公开(公告)号：US20020004380A1

公开(公告)日：2002-01-10

申请号：US09870277

申请日：2001-05-30

Applicant: Nokia Networks Oy

Inventor： Carsten Thormod Pedersen ,  Soren Kamaric Riis ,  Thomas Jul

IPC: H04M011/00

CPC classification number: H04Q3/0029

Abstract: In order to make the change of subscription type easy for subscribers using prepaid subscriptions, information indicating the types of a last used voucher and a new voucher is maintained. This information can be used to determine the types of said vouchers, to detect a change of subscription type and to select the proper way to update the credit.

Abstract translation: 为了使订阅者使用预付费订阅方式更改订阅类型，维护指示最后使用的凭单类型和新凭证的信息。 该信息可用于确定所述凭证的类型，以检测订阅类型的更改并选择正确的方式来更新信用。