Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens Spa ItalianafiledCriticalSiemens Spa Italiana
Publication of CH356498ApublicationCriticalpatent/CH356498A/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
H04M15/10—Metering calls from calling party, i.e. A-party charged for the communication
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04Q—SELECTING
H04Q3/00—Selecting arrangements
Landscapes
Engineering & Computer Science
(AREA)
Computer Networks & Wireless Communication
(AREA)
Signal Processing
(AREA)
Interface Circuits In Exchanges
(AREA)
CH356498D1956-09-281957-07-29
Double coincidence circuit for telecommunication systems, in particular telephone systems
CH356498A
(en)