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Application filed by Siemens AgfiledCriticalSiemens Ag
Application grantedgrantedCritical
Publication of AT274907BpublicationCriticalpatent/AT274907B/en
H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
H04M15/04—Recording calls, or communications in printed, perforated or other permanent form
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Engineering & Computer Science
(AREA)
Computer Networks & Wireless Communication
(AREA)
Signal Processing
(AREA)
Meter Arrangements
(AREA)
AT110967A1966-02-081967-02-06
Circuit arrangement for telecommunication, in particular telephone systems with central billing
AT274907B
(en)
Circuit arrangement for the acquisition and recording of charge impulses and for the storage of types of authorization for telephone subscriber connections in telephone switching systems