Specifications

Chapter 4 Troubleshooting and Diagnostics D8E1T1 Installation and Operation Manual
4-22 Expose (Link Status)
Table 4-11. G.826 Statistics Field Descriptions
Field Description
Link #: (display field) Displays the number of the link for which the status is being presented.
Total Time: (display field) Displays the amount of time (in seconds) that the link has been up and running.
Errored Seconds:
(display field)
A one-second period with one or more errored blocks or at least one defect is
known as an errored second. This field displays the number of errored seconds
that have occurred since the last counter reset.
Error Free Seconds:
(display field)
A one-second period of time during which the link was error-free. This field
represents the number of error-free seconds that have occurred.
Severely Errored Seconds:
(display field)
A subset of errored seconds, a one-second period in which more than 30% of
the blocks contain errors is known as a severely errored second. This field
displays the number of severely errored seconds that have occurred since the
last counter reset.
Consecutive Severely
Errored Seconds:
(display field)
A continuous occurrence of severely errored seconds, in one-second intervals,
which contain >30% or more errored blocks. This field represents the number
of consecutive severely errored seconds that have occurred since the last
counter reset.
Consecutive Error Free
Seconds: (display field)
A display of consecutive one-second period intervals that did not have defects
or errors on the link. This field displays the number of consecutive error-free
seconds that have occurred since the last counter reset.
Background Block Error:
(display field)
An errored block not occurring as part of a severely errored second. This field
displays the number of background block errors that have occurred since the
last counter reset.
Unavailable Seconds:
(display field)
The number of unavailable seconds that have occurred on the link during the
current interval. At the onset of 10 consecutive SES events, a period of
unavailable seconds begins. These 10 seconds are part of the unavailable
seconds count. At the end of 10 consecutive non-SES events, a new period of
available time begins. These 10 seconds are part of available time. Unavailable
seconds are not counted when factoring ratios.
Errored Seconds Ratio:
(display field)
Displays the ratio of errored seconds to total seconds in available time during a
fixed measurement interval.
Severely Errored Seconds
Ratio: (display field)
Displays the ratio of severely errored seconds to total seconds in available time
during a fixed measurement interval.
Background Block Error
Ratio: (display field)
Displays the ratio of background block errors to total blocks in available time
during a fixed measurement interval. The count of total blocks excludes all
blocks during severely errored seconds.
Error Insertion
For diagnostic purposes, specific errors can be inserted and momentarily
transmitted either directly to a remote unit or looped back to the D8E1T1 module.
Errors cannot be inserted into an unframed link; the error-insertion hot keys will be
disabled when a link is in unframed mode.
Note