Patent ID: 6580690
Filing Date: 2003-06-17
Classification: H04L,H04Q

Abstract:
A packet switching telecommunications network comprising:a plurality of switching nodes between which data packets are transported by logic paths, one of said logic paths being a main path between a first switching node and a second switching node, and means for linking at least a substitute logic path to said main path for transporting the same data packets between said first switching node and said second switching node as data packets transported by said main path, wherein said second node comprises switching means for switching from the main path to the substitute path, characterized in that the second node further comprises: means for determining an instant of time for switching from the main path to the substitute path, and means for preventing loss or duplication of packets at the time of switching independent of the respective numbers of data packets received over the main path and the substitute path while the switching means has been switched to the main path.