Patent ID: 7203160
Filing Date: 2007-04-10
Classification: H04L

Abstract:
1. A method for controlling duplexing in an ATM system, the ATM system including a plurality of duplexing control boards, each of the plurality of boards coupled to an input/output bus and having a plurality of input/output ports for transmitting/receiving state information, comprising: monitoring state information of first and second boards using the plurality of input/output ports, wherein the state information is provided to each of the first and second boards through the input/output ports connecting the first board to the second board; determining an active or standby state of each of the first and second boards according to the monitored state information; generating information to transfer an active authority to the second board, and forming presently processed data of the first board into ATM cell information, when the second board is required to assume the active state; and switching the duplexing to the second board according to the ATM cell information, wherein the ATM cell information comprises a virtual path and a virtual channel, and wherein the virtual path is 0 and the virtual channel is 0 when there is no change to the active and standby states between the first and second boards, and change to update information or software occurs during an operation of the ATM system.