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MIX 56 User Manual 4 Software Operation
122188-10 A0 Telect, Inc.
4-35
A prompt appears asking you to confirm the clear.
3. Type y and press Enter.
The error counts clear.
Viewing Low-Speed Errors
You can view low-speed error counts in either of the following ways:
• 15-Minute Histories—Error-count totals are displayed for every 15-
minute period in the last 24 hours (96 periods total), including current
period.
• 24-Hour Histories—Error count totals are displayed for two time peri-
ods: from Midnight of the current day to the end of the last completed
15-minute period; and from Midnight of the previous day to one second
before Midnight of the current day.
Error Definitions
These definitions are per ANSI T1.231 and/or ITU-T G.826. You can view
all of the following DS1 errors in either of the displays described above.
Errored Seconds (ES): A second with one or more bipolar violations
(BPV), excessive zeros (EXZ), or loss of signal (LOS).
Errored Seconds Ratio (ESR): Ratio of Errored Seconds to total seconds.
Severely Errored Seconds (SES): A second in which 1544 or more BPVs,
EXZs, or LOS’ occur.
Severely Errored Seconds Ratio (SESR): Ratio of Severely Errored Sec-
onds to total seconds.
Coding Violations (CV): A cumulative count of BPVs and/or EXZs.
Loss of Signal Seconds (LOSS): A second containing one or more LOS
detects.
AIS Seconds (AISS): A cumulative count of the seconds that Alarm Indi-
cation Signal (AIS) is received during the period of time.
To View Low-Speed Errors in 15-Minute Histories
The Low Speed Errors-15 min. screen displays error counts in individual
15-minute increments for the last 24 hours (96 total increments).
When you specify a time for which you want to view errors, the Low Speed
Errors-15 min. screen displays the error counts for the 15-minute span that
the time you specified is within. When you view the counts of the current
span, the screen updates every 2 seconds.