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Publication of CH335419ApublicationCriticalpatent/CH335419A/de
H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
H04M15/10—Metering calls from calling party, i.e. A-party charged for the communication
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Engineering & Computer Science
(AREA)
Computer Networks & Wireless Communication
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Signal Processing
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Meter Arrangements
(AREA)
CH335419D1954-10-041955-03-21Verfahren zur Zählung von Telephongesprächen und Schaltung zur Durchführung dieses Verfahrens
CH335419A
(de)