发明名称 ACCOUNTING SYSTEM FOR TELEPHONIC EXCHANGES
摘要 An automatic toll ticketing system provides means for transfering charge information from registers, incoming links and a rate of charge indicator, to a programmed data-processing machine. In case where the transfer is not possible, a second attempt is made, and if insuccessful, a fault signal is provided and busy tone is sent to the subscriber.
申请公布号 US3673333(A) 申请公布日期 1972.06.27
申请号 USD3673333 申请日期 1969.12.17
申请人 INTERN. STANDARD ELECTRIC CORP. 发明人 GUY JEAN LE STRAT;ROGER DESPLANQUES
分类号 H04M15/04;(IPC1-7):H04M15/06 主分类号 H04M15/04
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