Multiplex communications – Fault recovery – Bypass an inoperative channel
Reexamination Certificate
2005-02-15
2005-02-15
Kizou, Hassan (Department: 2662)
Multiplex communications
Fault recovery
Bypass an inoperative channel
C370S395100, C370S535000
Reexamination Certificate
active
06856594
ABSTRACT:
A method and system including ATM switching equipment provided for switching between a working channel and a protection channel in an ATM network. The method and system include the following processes: In each cell for transmission providing an indication of whether the cell belongs connection currently in a working state via a working channel; cells are duplicated on each connection basis; the duplicated cells are transmitted simultaneously on both a working channel and a protection channel; and valid cells are selected from received cells according to the indication in each cell indicating whether the relevant connection is currently in a working state.
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Aihara Naoki
Hayami Hichiro
Tada Iwao
Yamaguchi Tomoyuki
Katten Muchin Zavis & Rosenman
Kizou Hassan
Sefcheck Gregory
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