Cell Transfer Delay (CTD): mean CTD < N ms
Cell Delay Variation (CDV): difference between
upper and lower 10–8 quantiles of CTD < N ms
Cell Loss Ratio (CLR):
< N x 10-7
(less often
specified)
Cell Error Ratio (CER):
< N x 10-6
Cell Misinsertion Rate (CMR):
< N / day
Severely Errored Cell Block Ratio (SECBR): < N x 10-4