Patent ID: 7110354
Filing Date: 2006-09-19
Classification: H04L

Abstract:
1. A method for controlling a 1+1 bi-directional switching operation of an Asynchronous Transfer Mode (ATM) switch, comprising: determining whether a signal fail (SF) has occurred at a source station; determining whether a priority of the SF is higher than a priority of an existing SF if the SF is determined to have occurred; determining whether a target station uses a same protocol as the source station if the priority of the SF is determined to be higher than the priority of the existing SF; performing a switching operation if the same protocol is determined to be used by the target station, and transmitting a switching notification signal from the source station to the target station; and performing associated switching operations by the target and source stations after checking signals from each other, if it is determined that the target station does not use the same protocol as the source station, wherein priority is higher when a protection side of the source station is active, than when a working side of the source station is active.