发明名称 Verfahren zur Guthabenerfassung im Fernsprechwesen
摘要 The invention concerns a method in which credit is obtained from a credit vendor, the subscriber's telephone number and the amount of the credit being input into a device which contains a coding algorithm and emits a coded figure. In order to register the credit in a function unit of the telephone network, a special access code is dialled at the subscriber's telephone handset and the coded figure is then input.
申请公布号 DE19528423(A1) 申请公布日期 1997.02.06
申请号 DE19951028423 申请日期 1995.08.02
申请人 SIEMENS AG, 80333 MUENCHEN, DE 发明人
分类号 H04M17/00;H04W4/24;(IPC1-7):H04M15/00 主分类号 H04M17/00
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