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Method and apparatus for healing of failures for chained boards with SDH interfaces

  • US 20030133405A1
  • Filed: 11/15/2002
  • Published: 07/17/2003
  • Est. Priority Date: 01/15/2002
  • Status: Abandoned Application
First Claim
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1. A failure resistant telecommunication device arranged in a rack being subdivided into at least two sub-racks;

  • said at least two sub-racks each comprising two or more unit boards for data communications and at least one spare unit board;

    within each sub-rack, any of said unit boards and said spare unit board being connectable by means of a;

    and at least the bus of one of the sub-racks being extended to the other sub-rack to form a pool of spare unit;

    said telecommunication device further comprising a control unit adapted and programmed to monitor at least one of the sub-racks to detect a failure, to determine a failed unit board associated to said failure, and to either operate the spare unit board of the same sub-rack or to operate via the extended bus the spare unit board of the other sub-rack) to replace the failed unit board.

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