Test Results
270 MAX-800 Series
Performance Monitoring
SEP (Severely Errored Period) (G.828 only): A sequence between
3 to 9 consecutive SES. The sequence is terminated by a second which
is not a SES.
SEPI (Severely Errored Period Intensity) (G.828 only): Gives the count
of SEP events in available time, divided by the total available time in
seconds.
Far-End
EFS (Error Free Second): Gives the count of the seconds within which
no error occurred or when a defect is detected on the near-end.
EC (Error Count) (G.821 only): Gives the number of bit errors.
EB (Errored Block) (G.826, G.828, and G.829): Gives the count of
blocks in which one or more bits are in error.
ES (Errored Second): For G.826, G.828, G.829, M.2100 ISM, and
M.2101: Gives the count of the seconds within which one or more
anomalies (FAS (DSn/PDH), EB, etc.) occurred or at least one defect
occurred.
SES (Severely Errored Second)
For G.826, G.828, G.829 and M.2101: Gives the number of seconds
within which anomalies (FAS (DSn/PDH), EB, etc.) are X percent or
at least one defect occurred. X=30 percent for DSn/PDH signals; see
the following table for SONET/SDH signals SES threshold.
OC-1
STS-1e
STM-0
STM-0e
OC-3
STS-3e
STM-1
STM-1e
OC-12
STM-4
OC-48
STM-16
OC-192
STM-64
Path 30 % 30 % 30 % 30 % 30 %
Line/MS 15 % 15 % 25 % 30 % 30 %
Section/RS 10 % 30 % 30 % 30 % 30 %
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