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Performance Monitoring

24-Hour Unavailable Seconds

After ten Severely Errored Seconds in a row, the CSU begins to count Unavailable Seconds. As the name suggests, the error rate in this condition is considered to be so high that the T1 circuit should be treated as though it were not available.

Once a CSU begins counting Unavailable Seconds it will continue to do so until ten consecutive seconds pass, all of which are error free or have a lower error rate than a Severely Errored Second.

A typical 24-Hour Unavailable Seconds display is shown below in Figure 4-6:

Figure 4-6

24-Hour Unavailable Seconds

24 HOUR UAS PERFORMANCE DATA Site Name: Tech Pubs NCC 2020

5-14-98

15:13:03

Valid Intervals

UAS

in

24

Hours

96 0

1, 1 Seconds in Current Interval 786

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[1,1] NEAR TAC 2010 >

4-6

Verilink NCC 2020 User Manual

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