4. Multiplex communications
  5. Fault recovery
  6. Bypass an inoperative channel

Tsutomu Chikazawa

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Communication device for switching connection from a working cha

Multiplex communications – Fault recovery – Bypass an inoperative channel
Patent

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Optical ring transmission system using squelch method

Optical communications – Fault recovery – Bypass inoperative element
Reexamination Certificate

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Power supply monitoring device

Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate

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Transmission apparatus with a function to switch a line in...

Multiplex communications – Fault recovery – Bypass an inoperative station
Reexamination Certificate

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Profile ID: LFUS-PAI-P-189864

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