Switching network

Multiplex communications – Wide area network – Packet switching

Patent

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Details

370 67, H04Q 1104

Patent

active

044033214

ABSTRACT:
A switching network used to connect a number of input lines to a number of output lines via an internal time-division multiplex line. A memory and a counter for repeatedly and cyclically addressing all the memory locations is provided. An output line which is connected to the internal time-division multiplex line by means of an address decoder, the address decoders being connected to the counter, is assigned to each memory location. The memory receives in each memory location the number assigned to an input line, the output of the memory being connected to each one of the number decoders for each input line, which each time decodes a different number. As a result thereof, after reading of an address, an output line is switched by an address decoder, is connected to the internal time-division multiplex line, this time-division multiplex line being connected to the input line via the number decoder which corresponds to the number stored in this location. When the switching network is used as a concentrator, the input lines, the subscriber's lines and the output lines are preferably the connections to the service modules of a subscriber's station in a remote time-division multiplex transmission system. The switching network is to a large extent of a modular construction and can therefore be easily extended.

REFERENCES:
patent: 3521000 (1970-07-01), Feder
patent: 3522381 (1970-07-01), Feder
patent: 3728492 (1973-04-01), Cappetti et al.
patent: 4253179 (1981-02-01), Shimizu

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