User`s guide

6. Monitoring and Troubleshooting
7990-A2-GB20-00 May 2002
6-11
DSL Error Statistics are collected for:
ES (Errored Seconds):
Seconds during which one or more Cyclic
Redundancy Check (CRC) errors or Loss of Sync Word (LOSW) defects has
occurred. Maximum value is 900.
SES (Severely Errored Seconds):
Seconds during which 50 or more CRC
anomalies or one or more LOSW defects has occurred. Maximum value
is 900.
UAS (Unavailable Seconds):
Seconds during which the SHDSL line is
unavailable. The SHDSL line becomes unavailable after 10 contiguous
Severely Errored Seconds. Maximum value is 900.
LOSW (Loss of Sync Word Seconds):
Seconds during which the SHDSL
line had a Loss of Sync Word defect. Maximum value is 900.
Use the virtual function keys to page through the intervals and clear statistics.
This Field . . . Contains . . .
Current Interval Timer The number of seconds which have elapsed in the current
15-minute interval. Maximum value is 900 seconds
(15 minutes). This counter is reset every 15 minutes.
Current Int Performance data for the current 15-minute interval.
Interval
xx Historical performance data for up to 96 15-minute intervals
(24 hours).
Worst Interval The number of the interval with the worst (highest) performance
data for both the near- and far-end statistics. If two or more
intervals are equal, the oldest interval is displayed.
Near and Far Tot A running total of the near- and far-end performance statistics.