FR697890A - Perfectionnements apportés aux dispositifs avec compteur d'appel pour les installations de téléphonie automatique et semi-automatique
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Perfectionnements apportés aux dispositifs avec compteur d'appel pour les installations de téléphonie automatique et semi-automatique
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Telefonaktiebolaget LM Ericsson AB
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Telefonaktiebolaget LM Ericsson AB
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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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Computer Networks & Wireless Communication
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Signal Processing
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FR697890D1929-06-281930-06-25Perfectionnements apportés aux dispositifs avec compteur d'appel pour les installations de téléphonie automatique et semi-automatique
ExpiredFR697890A
(fr)