Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Hitachi Ltd
Original Assignee
Hitachi Ltd
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Publication date
Application filed by Hitachi LtdfiledCriticalHitachi Ltd
Priority to JP6948677ApriorityCriticalpatent/JPS544507A/en
Publication of JPS544507ApublicationCriticalpatent/JPS544507A/en
H04M17/00—Prepayment of wireline communication systems, wireless communication systems or telephone systems
Abstract
PURPOSE:To make it possible to send out charging signals with high precision, and to economize the circuit constitution, by sending out coin-insertion announcing tones and charging signals through the program control from a CPU.
JP6948677A1977-06-141977-06-14Pay station line equipment
PendingJPS544507A
(en)