Patent ID: 6069876
Filing Date: 2000-05-30
Classification: H04L,H04Q

Abstract:
A method of conducting a transmission performance test of an ATM network at a node, wherein directions a and b are directions from the node and to the node respectively, and r.sub.a and r.sub.b are transmission rates for directions a and b respectively, comprising steps of:generating ATM idle cells;generating test pattern data;inserting the test pattern data in one or more ATM idle cells to generate one or more modified ATM idle cells;sending in one channel in direction a the one or more modified ATM idle cells through the ATM network under test;receiving in another channel in direction b the one or more modified ATM idle cells;deriving a transmission performance parameter of the network from received test pattern data in the one or more received modified ATM idle cells; andadjusting either one or both the test pattern data to be inserted by factor sand the test pattern data received by factor s.sub.b ; ##EQU3## and HCF (r.sub.a,r.sub.b) is the highest common factor between r.sub.a and r.sub.b.