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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AT&T Corp
Original Assignee
Western Electric Co Inc
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Filing date
Publication date
Application filed by Western Electric Co IncfiledCriticalWestern Electric Co Inc
Application grantedgrantedCritical
Publication of FR938865ApublicationCriticalpatent/FR938865A/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
H04M15/38—Charging, billing or metering by apparatus other than mechanical step-by-step counter type
Landscapes
Engineering & Computer Science
(AREA)
Computer Networks & Wireless Communication
(AREA)
Signal Processing
(AREA)
Interface Circuits In Exchanges
(AREA)
FR938865D1940-05-221946-11-29Perfectionnements aux systèmes de téléphonie automatique
ExpiredFR938865A
(fr)