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Publication of FR318305ApublicationCriticalpatent/FR318305A/fr
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
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Computer Networks & Wireless Communication
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Signal Processing
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Relay Circuits
(AREA)
FR318305A1902-02-01Système commutateur du compteur des conversations pour bureaux de téléphones
ExpiredFR318305A
(fr)