Verilink PRISM 3030 (34-00208.L) Product Manual - Manual (Page 64)

54 C HAPTER 4: T ERMINAL O PERATION
24 Hr.% Error Free
Displays the percentage of error-free seconds within the last 24 hours or since the
event registers were last cleared. It is based only on the ES and UAS parameters.
(Performance data)
The main body of display data consists of error events for three different
periods: The first display line shows the data accumulated for the current interval
(from 0 to 900 seconds). The second line shows the totals for the last 24-hour period
(or the last 96 fifteen-minute intervals). The third line shows the 30-day totals.
The remaining lines of this screen show the data for any intervals containing
errors. Interval 1 is the most recently stored 15 -minute interval and interval 96 is
the oldest in the current 24-hour period. On the 30-day screens, interval 30 is the
oldest 1 -day interval in the current 30-day period. The real time (or date on
30-day screens) of the interval beginning is shown in the first column.
If more than five errored intervals have elapsed, Page-Dn appears to the left of the
performance data. Pressing Enter on this field displays the next five errored
intervals. Page-Up appears once Page-Dn is used. Pressing Enter on Page- Up
displays the previous five errored intervals. Only intervals that contained errors are
displayed, which eliminates rows of zeroes. If an interval is not displayed, no
errors were detected during that time period.
The parameters shown on the Performance screens are updated at five-second
intervals.
Per AT&T Technical Reference TR 54016, the Standard 24 Hour and Standard 30
Day performance data consists of Errored Seconds (ES), Unavailable Seconds
(UAS), Bursty Errored Seconds (BES), Severely Errored Seconds (SES), Loss of
Frame Count (LOFC), and Controlled Slip Seconds (CSS).
The Enhanced 24 Hour and Enhanced 30 Day screens show data for CRC Errored
Seconds (CRCES), Out of Frame Seconds (OOFS), Loss of Signal Seconds
(LOSS), Alarm Indication Signal Seconds (AISS), Remote Alarm Seconds (RAS),
and Bipolar Violation Seconds (BPVS).
For generic TR 54016 far-end devices, only the standard telco 24 -hour performance
data is displayed. 30 - day data is not available.
Table 4-3 Status Indications
Status Description
------- No status is available.
OK No errors are detected.
ERR Frame bit errors, CRC errors, or BPVs are detected.
LOS A loss of signal condition exists.
OOF An out of frame condition exists.
RAI The far end is receiving a remote alarm indication signal.
AIS The far end is receiving an alarm indication signal.
UAS An unavailable signal state exists due to consecutive severely errored seconds.
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