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Communication Mediums for Signal, ITS, and Freeway Surveillance Systems Final Report (1996) / Chapter Skim
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A.4.2 Reliabiligy, Availability, and Maintainability of Advanced Communication Systems
Pages 450-452

The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.


From page 450...
... The military, telecommunication, and electronic ~ndustnes have developed methodologies for calculating integrated system availability that uses MTBF, MTTH, and related parameters for system elements. As failure and repair involve uncertainty, many advanced sophisticated statistical techniques are available to model the many variations including component/equipment failure charactenstics, equipment and system architectures, alternative redundancy schemes, etc.
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From page 451...
... An rrS-related example would be Mat We backbone communication subsystem be critical and local loop communication links and signal controllers be non-cntical win independent subsystem goals as opposed to Integrate system goals. Table A.4.2-1 discusses serial and paraBe!
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From page 452...
... Element VlllR is evaluated as part of spares inventory replacement and not system ~MTTR. Serial elements A configuration of component, equipment, subsystem, system, etc such that ~ one element Parallel elements subsystem, system, etc such that all parallel elements must fail for the system to be considered failed.
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Key Terms

  • failure rate
  • parallel elements
  • element equations
  • continuing rapid
  • average time

  • alternative redundancy
  • win independent
  • field data
  • redundancy typically
  • series element

  • accepted basic
  • sophisticated statistical
  • redundancy schemes
  • logistic requirements
  • independent subsystem

  • approximating equations
  • successfully perform
  • future modeling
  • failure charactenstics
  • highly regarded

  • considered failed
  • backbone communication
  • composite mtbf
  • advanced sophisticated
  • average percent

  • required conditions
  • variations including
  • signal controllers
  • involve uncertainty
  • wad field


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