MX2800 STS-1 User Manual Statistics, Section 5
STS-1 Statistics
61204659L1-1A 5-7
Line Errored Seconds (LES)
This indicates the number of seconds with one or more coding violations or one or more incoming defects
(e.g., SEF, LOS, AIS, LOP) at the Line layer.
Path Errored Seconds (PES)
This indicates the number of seconds with one or more coding violations or one or more incoming defects
(e.g., SEF, LOS, AIS, LOP) at the Path layer.
Section Severely Errored Seconds (SSES)
This indicates the number of seconds with X or more coding violations at the Section layer, or a second
during which at least one or more incoming defects at the Section layer has occurred. Values of X vary
depending on the line rate and the Bit Error Rate.
Line Severely Errored Seconds (LSES)
This indicates the number of seconds with X or more coding violations at the Line layer, or a second during
which at least one or more incoming defects at the Line layer has occurred. Values of X vary depending on
the line rate and the Bit Error Rate.
Path Severely Errored Seconds (PSES)
This indicates the number of seconds with X or more coding violations at the Path layer, or a second during
which at least one or more incoming defects at the Path layer has occurred. Values of X vary depending on
the line rate and the Bit Error Rate.
Line Unavailable Seconds (LUAS)
This indicates the time in seconds that the Line layer has been unavailable for data delivery.
Path Unavailable Seconds (PUAS)
This indicates the time in seconds that the Path layer has been unavailable for data delivery.
Positive Pointer Justification (PPJ)
This indicates the number of times the detected pointer value is incremented by one.
Negative Pointer Justification (NPJ)
This indicates the number of times the detected pointer value is decremented by one.
Clear All STS-1 Performance Statistics
This option clears all current information. This selection affects all STS-1 statistical information (not just
the displayed screen). When viewing the 24-hour history screen, press the down arrow key to access this
selection.