
Chapter 5 Monitoring and Diagnostics Installation and Operation Manual
5-6 Monitoring Performance Egate-100 Ver. 4.0
Egate-100
...Physical Layer>SDH/SONET>Statistics> E1/T1 Statistics > 1 Day Interval
1. E1/T1 Number [1–63] > (1)
Intervals (5)
ES (4294566)
SES (2011583)
UAS (2014457)
Far End ES (2014257)
Far End SES (2014428)
Far End UAS (0)
>
F-Forward; B-Backward; ^F-Forward Interval; ^B-Backward Interval
Please select item <1 to 1>
ESC-prev.menu; !-main menu; &-exit; ?-help
Figure
5-8. SDH/SONET E1/T1 Statistics, One-Day Intervals
³ To clear E1/T1 current statistics:
• In the E1/T1 Statistics menu, select Clear Current Statistics to clear all E1/T1
current statistics.
³ To clear E1/T1 interval statistics:
1. In the E1/T1 Statistics menu, select Clear Intervals Statistics.
A confirmation message appears:
Clear all intervals statistics. Are you sure? (y/n)
2. Type Y to confirm your request.
All E1/T1 interval statistics are cleared.
Table
5-1. SDH/SONET Statistic Counters
Parameter Description
ES Number of seconds during which one or more of the following faults
occurred:
• Severely Errored Frame (SEF) (also called Out of Frame (OOF) ): A SEF
defect is declared after detection of four contiguous errored frame
alignment words. The SEF defect is terminated when two contiguous
error free frame words are detected.
• Loss of Signal (LOS) defect: A LOS defect is declared after when no
transitions are detected in the incoming line signal (before
descrambling) during an interval of 2.3 to 100 microseconds. The LOS
defect is terminated after a 125 microsecond interval (one frame)
during which no LOS defect is detected.
• Loss of Pointer (LOP) defect: A LOP defect is declared after no valid
pointer is detected in eight consecutive frames. The LOP defect will
not be reported while an AIS signal is present. The LOP defect is
terminated after a valid pointer is detected.
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