Instruction manual

Maintenance
Internal
(DSE) Loopback Test
The Internal (DSE) Loopback Test checks the communication path between the
Processor module and the 800 CO-BRI module. If the test fails, the 800 CO-BRI
module usually should be replaced.
Follow the screens and instructions below to run an Internal Loopback Test.
Step
Screen Display
1
slot :
Enter slot
Backspace
number (OO-17)
Exit
Enter
Procedure
— — —
At the Slot screen, enter the number of
the slot in which the 800 CO-BRI
module resides. Select Enter.
2 slot xx:
I
At the menu for that slot, select Busy-
Exit
3
Exit
4
Make a selection
Status
Demand
Test
Busy-Out
Reset
Restore
Clock
BchLoopback
●
Busy-Out Slot xx:
Do you want to continue?
Yes
Cancel
Busy-Out Slot xx:
Busy-Out Complete
Exit
out.
At the Busy-Out Slot screen, select
Yes.
When the busy-out of the slot is
complete, the Busy-Out Complete
screen appears. Select Exit.
NOTE:
If the busy-out cannot be completed,
a screen showing “Busy-Out FAlLED”
appears. Repeat steps 2 through 4
until the slot can be busied-out.
Demand Tests 6-5