When the standard of Performance Parameters is set to M.2101.1, BIS
(Bringing-Into-Service) limit is displayed as the Performance Objective.
BIS limitBIS limit
ItemsItems DefinitionDefinition
S1-ES
The ES threshold for deciding Accecpted
S2-ES
The ES threshold for deciding Unaccecpted
S1-SES
The SES threshold for deciding Accecpted
S2-SES
The SES threshold for deciding Unaccecpted
S1-ES, S2-ES, S1-SES, and S2-SES are the calculated values according to ITU
Recommendation, and vary depending on Allocation and Period of
Performance Parameters. When the measured ES value is equal to or less than
S2-ES or the measured SES value is equal to or less than S2-SES, the result is
judged as Pass.
PDH Performance Measurement ItemsPDH Performance Measurement Items
This paragraph describes the performance result items. Measurement time
definitions are as below.
S
Total
Total measurement time. This is the total time of the measurement excluding
the time of power failure.
S
Avail
Available time of measurement. Calculated from the following formula:
S
Avail
=S
Total
-S
Unavail
S
Unavail
Unavailable time of the measurement. Refer to UAT definition.
Performance ParametersPerformance Parameters
ItemsItems DefinitionDefinition
ES
Errored Second
Within S
Avail
, the number of seconds during which one or more errors
occurred.
SES
Severely Errored Second
Within S
Avail
, the number of seconds during which any of the following is
detected.
10
-3
or more errors
AIS
LOS
BBE
*
Background Block Error
Within S
Avail
, the number of errors during which SES is not detected.
ALS
Alarm Second
Within S
Avail
, the number of seconds during which any of the following is
detected.
AIS
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