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Switching network

  • US 4,403,321 A
  • Filed: 04/15/1981
  • Issued: 09/06/1983
  • Est. Priority Date: 06/14/1980
  • Status: Expired due to Fees
First Claim
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1. A switching network for optionally connecting a number of channel modules to each one of a subscriber'"'"'s module out of a larger number of subscriber'"'"'s modules and number decoder modules via an internal time-division multiplex line which forms an interconnection between all the channel modules and all the subscriber'"'"'s modules, particularly for use as a concentrator, characterized in that a memory is provided having a number of memory locations at least equal to the number of channel modules, each channel module having one single memory location fixedly assigned to it, that an addressing device addresses in a cyclic sequence and repeatedly all the memory locations and connects in parallel therewith each assigned channel module to the internal time-division multiplex line, the address cycle being equal to the sampling period of the signals of the subscriber'"'"'s modules, that the output of the memory is connected in parallel to each one of the number decoders for each subscriber'"'"'s module which decodes the numbers which are different for different subscriber'"'"'s modules, a number decoder which decodes its number connecting the associated subscriber'"'"'s module to the internal time-division multiplex line and that in order to establish a connection between a subscriber'"'"'s module and a channel module a control arrangement writes the number of the number decoder associated with the subscriber'"'"'s module into the memory location assigned to this channel module.

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