363-206-285 Trouble Clearing: TAP-109
Issue 2, February 2000 Page 4 of 4
DDM-2000 OC-3 MULTIPLEXER
9. !
CAUTION:
You must determine the reason for the
ABN
indication before attempting
to clear it.
Use the command rtrv-state-( )to see if you can determine the condition
associated with the ABN indication.
10. Contact the appropriate personnel at your location, at the far-end location, and
at any central maintenance location to determine the reason for the ABN
indication before clearing it.
11. Have you determined that it is appropriate for you to clear the condition
causing the ABN indication?
If YES, then proceed to Step 14.
If NO, then continue with Step 12.
12. There is nothing more to be done until the reason for the ABN condition is
known.
13. STOP. YOU HAVE COMPLETED THIS PROCEDURE.
14. Use the appropriate command to clear the abnormal condition. The command
will be rls-lpbk-( ) or switch-( ).
15. Is the ABN indicator still lighted?
If YES, then continue with Step 16.
If NO, then STOP. YOU HAVE COMPLETED THIS PROCEDURE.
16. Use the rtrv-alm: command to determine if there are other conditions
causing the ABN alarm. See Table A.
17. See Table A. Does the rtrv-alm: command report any other abnormal
conditions.
If NO, then do TAP-108.
If YES, then repeat this procedure from Step 6.
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