公开(公告)号：JP2001016229A

公开(公告)日：2001-01-19

申请号：JP2000155660

申请日：2000-05-26

Applicant: NOKIA NETWORKS OY

Inventor： SOLANA DE QUESADA UUAN IGNACIO

IPC: H04L1/22 ,  H04J3/00 ,  H04L12/28 ,  H04L12/70 ,  H04L12/931 ,  H04Q11/04

Abstract: PROBLEM TO BE SOLVED: To provide a simple protection mechanism that is suitable for functioning in an ATM network and in matching with a switching request (about 50 ms) in a transmission network at present. SOLUTION: The network element includes a function side transmission concentrated sub layer entity (TCS-W) and a protection side transmission concentrated sub layer entity (TCS-P) and both the entities can individually addressed in the ATM element through a UTOPIA address. The ATM network element selects the UTOPIA address (UA2) for the function side transmission concentrated sub layer entity (TCS-W) and the protection side transmission concentrated sub layer entity (TCS-P) for transmission so long as an error message indicating a defect in the transmission concentrated sub layer sub network connection is not received and combines data entered to the network element via both the entities.