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H04Q3/0008—Selecting arrangements using relay selectors in the switching stages
H04Q3/0012—Selecting arrangements using relay selectors in the switching stages in which the relays are arranged in a matrix configuration
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BE748496D1969-04-031970-04-03
MOUNTING FOR TRANSLATOR IN CENTRAL-CONTROLLED TELECOMMUNICATIONS INSTALLATIONS, IN PARTICULAR TELEPHONE CENTERS
BE748496A
(en)
Circuit for telecommunications installations, in particular telephone installations, incorporating devices for automatic identification of communications
MOUNTING FOR TELECOMMUNICATIONS INSTALLATIONS, IN PARTICULAR TELEPHONE INSTALLATIONS, IN WHICH DATA TRANSMISSION CAN BE CARRIED OUT BY TELEPHONE LINK WAYS