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SC800 T3 Operation
Performance Conditions
Each parameter display presents information concerning occurrences of the following conditions:
Errored Seconds
An Errored Seconds alarm event occurs when there is a count of one-second intervals containing
one or more CP-bit parity errors, one or more SEF defects, or one or more AIS defects.
Near-End Path Failure Count
A Near-End Path Failure is a count of the number of occurrences of near-end path failure events,
defined as follows: A near-end path failure event begins when either a LOF or AIS failure is
declared, or a near-end path failure event ends when both LOF and AIS failures are clear.
Severely Errored Seconds
A Severely Errored Seconds alarm event occurs when there is a count of one-second intervals
contains more than x (default is 44) CP-bit errors, one or more SEF defects, or one or more AIS
defects.
Severely Errored Frame/AIS
An Severely Errored Frame/AIS alarm event occurs when there is a count of one-second intervals
containing one or more severely errored frame defects or one or more AIS defects.
Unavailable Seconds
An Unavailable Seconds alarm event occurs when a there is a count of one-second intervals for
which the DS3 path is unavailable. DS3 path becomes unavailable at the onset of 10 contiguous
severely errored seconds.
Code Violations
A Bipolar Violation (BPV) alarm event occurs when there is a count of CP-bit parity errors
occurring in the accumulation period.
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SpectraComm 800 T3 Data Service Unit
Installation and Operation Manual
Performance Screen
076R160-000
Issue 4
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