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TRANSMISSION SYSTEM WITH FLEXIBLE FRAME STRUCTURE

  • US 20010015985A1
  • Filed: 10/15/1997
  • Published: 08/23/2001
  • Est. Priority Date: 10/22/1996
  • Status: Active Grant
First Claim
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1. Transmission system comprising a transmitter being coupled to at least one receiver via a transmission medium, the transmitter comprising frame assembling means for assembling frames comprising a control portion and a sequence of ATM cells, the transmitter further comprises validity indication inserting means for inserting an validity indication in the control portion regarding the validity of the sequence of ATM cells, the receiver comprising frame disassembling means for extracting the ATM cells from the frames if the validity indication indicates valid ATM cells, characterised in that the frame assembling means are also arranged for inserting data different from a sequence of ATM cells into the frame, in that the validity indication insertion means are arranged for introducing an identification of the data different from a sequence of ATM cells by a different value of the validity indicator, and in that the frame disassembling means are arranged for extracting the data different from a sequence of ATM cells from the frames, if the validity indicator indicates data different from a sequence of ATM cells.

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