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Application filed by Siemens AgfiledCriticalSiemens Ag
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Publication of AT301631BpublicationCriticalpatent/AT301631B/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
H04M15/28—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP with meter at substation or with calculation of charges at terminal
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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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Meter Arrangements
(AREA)
AT537368A1967-06-071968-06-05
Circuit arrangement for charge meters at stations in telecommunications, in particular telephone systems
AT301631B
(en)
Telephone call charge counting circuit - uses photocoupler bridge network receiver circuit to enable counting of low and high frequency common mode charge signals while rejecting no