Performance Parameters; Errored Seconds (Es); Severely Errored Seconds (Ses); Severely Errored Framing Seconds (Sefs) - ADTRAN MX2800 STS-1 System Manual

Section 5, Statistics MX2800 STS-1 User Manual
Local Port Statistics

Performance Parameters

Errored Seconds (ES)

This parameter is a count of one-second intervals with one or more BPVs, or one of more excessive zeroes
(EXZs), or one or more LOS defects. For a B8ZS-coded signal, BPVs that are part of the zero-substitution
code are excluded.

Severely Errored Seconds (SES)

This parameter is a count of one-second intervals with 1544 or more BPVs plus EXZs, or one or more LOS
defects. For a B8ZS-coded signal, BPVs that are part of the zero-substitution code are excluded.

Severely Errored Framing Seconds (SEFS)

This parameter is a count of one-second intervals containing one or more SEF defects or one of more AIS
defects.

Unavailable Seconds (UAS)

This parameter is a count of one-second intervals for which the DS1 path is unavailable. The DS1 path
becomes unavailable at the onset of ten contiguous SESs. The ten SESs are included in unavailable time.

Degraded Minutes (DMS)

This count is derived from the number of errored seconds (not including severely errored seconds).
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