Multiplex communications – Fault recovery – Bypass an inoperative switch or inoperative element of a...
Reexamination Certificate
2007-04-10
2007-04-10
To, Doris H. (Department: 2616)
Multiplex communications
Fault recovery
Bypass an inoperative switch or inoperative element of a...
C370S220000, C370S227000
Reexamination Certificate
active
09666054
ABSTRACT:
A duplexing control system and method of an ATM switching system capable of carrying out a stable switching of duplexing with a simple circuit construction is disclosed. The system has two boards respectively having a first interface matching with an input bus so as to interface received ATM cell, a second interface matching with an output bus so as to interface a transmitted ATM cell, an SAR for disassembling and assembling data units contained in an application layer in the transmitted/received ATM cell by a unit of ATM cell, a control section for controlling general operation in order to maintain the active state according to data processing information contained in a signal applied from the cell disassembling and assembling circuit, when the its own board is endowed with the active authority by the signal, and a DRAM for storing data transmitted/received for the switching of duplexing between the boards. The duplexing control system and method in an ATM system causes data processing information of one board and a duplexing authority to be formed into an ATM cell and to be transferred through a cell bus, so that a duplexing control can be stably carried out.
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Ked & Associates LLP
LG-Nortel Co., Ltd.
Moore Ian N.
To Doris H.
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