Specifications

Chapter 4 Troubleshooting and Diagnostics D8E1T1 Installation and Operation Manual
4-4 Diagnostic Test Options
Table 4-3. Diagnostics Manager Field Descriptions – BERT Fields
Field Description
BERT (Testing
State): (display field)
Displays the type of BERT that is currently enabled. If BERT is not enabled, then Off
is indicated. Refer to the section titled BERT (Bit Error Rate Test)
for a list of the
possible displayed states.
BERT (Test
Duration):
(display field)
Displays the amount of time (in seconds) that BERT has been enabled.
BERT (Testing)
Errors: (display field)
Displays the number of errored seconds that have occurred since BERT was enabled.
4.3 Diagnostic Test Options
The following are diagnostic tests and status displays that can be enabled on the
T1/E1 links. To run these tests, place your cursor on a numbered link and press a
hot key (see choices below):
Table 4-4. Diagnostic Test Options
Option Description
[B]ert
Allows you to select several pseudo-random test patterns for testing the T1/E1 links.
Selectable only in Clear T1/E1 Disabled mode.
[L]oop
Allows you to enable several different loopbacks for the T1/E1 links. Selectable in all
modes.
[E]xpose
Allows you to display the status of the link and run additional procedures such as re-
initializing the T1/E1 framers and injecting known errors. Selectable in all modes.
[C]lear Error
Counters
Allows you to clear all errored second and BERT counters. Selectable in all modes.
ESF [S]tatistics
Allows you to view the ESF Statistics Display, which shows current and 24-hour
statistics for the specific ESF link. Framing Statistics are only available in Clear T1/E1
Disabled mode.
15-min Performance
[R]egisters
Allows you to view the 15-Minute Performance Registers Display, which gives the same
information as the ESF Statistics Display but it is broken down by link for each of the
ninety-six 15-minute intervals in the preceding 24-hour period. Framing Statistics are
only available in Clear T1/E1 Disabled mode.
[G].826:
Allows you to view the G.826 Statistics Display, which provides G.826 performance
statistics for a given T1 or E1 link for the duration of time that the link has been up
and running.
The procedures for running diagnostics and viewing statistics are detailed on the
next several pages.