Concentrator-deconcentrator devices
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United States of America Patent
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-
Dec 13, 1983
Grant Date -
N/A
app pub date -
Apr 21, 1980
filing date -
Apr 25, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Concentrator-deconcentrator devices for time-division telephone systems, based on the use of symmetrical time-division arrays arranged in terminal modules comprising subscriber and line connecting units to be served and in central modules which provide the connections between these equipments and the exchange to which the device is connected by ensuring variable concentration and improved security. The device is intended for PCM time-division telephone systems.
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