Instruction manual

Maintenance
After the test is run, restore the 800 CO-BRI module and exit maintenance as you
would for any demand test (see the Maintenance and Troubleshooting Guide,
#555-620-143).
B-Channel Loopback Test
Step
1
The B-Channel Loopback Test checks the communication path between the
Processor module and the 800 CO-BRI module interface for BRI lines. If the test
fails, the 800 CO-BRI module usually should be replaced. Follow the screens
and instructions below to run a B-Channel Loopback Test.
Screen Display
Procedure
slot:
At the Slot screen, enter the number of
Enter slot number (00-17)
the slot in which the 800 CO-BRI
module resides. Select Enter.
xx
Backspace
Exit
Enter
2
slot xx:
Make a selection
Status
Demand Test
Busy-Out
Reset
Restore Clock
BchLoopback
Exit
At the menu for that slot, select Busy-
Out.
3
Busy-Out SIot XX:
Do you want to continue?
Yes
Cancel
Exit
At the Busy-Out Slot screen, select
Yes.
I
6-10 Demand Tests