Actlpbkt; Ais - Fujitsu FLM 150 ADM Maintenance And Trouble Clearing

Maintenance and Trouble Clearing
FJTU-320-515-480
3.4

ACTLPBKT

The NE reporting the condition has a loopback control operated to provide a
terminal loopback that loops the selected channel back to the far end for testing
at that site.
Table 3-2: ACTLPBKT (Terminal Loopback Activated)—Standing Condition
AID
Direction
Type
EC1 NA
OC3 NA
OVTG NA
T1 NA
T3 NA
3.5

AIS

AID
Direction
Type
EC1 TRMT/RCV
OC3 TRMT/RCV
OC12
Issue 9, May 1999
Probable Cause
OPR-LPBK-EC1 has been
executed.
OPR-LPBK-OC3 has
been executed.
OPR-LPBK-OVTG has
been executed.
OPR-LPBK-T1 has been
executed.
OPR-LPBK-T3 has been
executed.
Table 3-3: AIS (Alarm Indication Signal)—Alarm Event
Probable Cause
The locally received middle-speed
(TRMT) or high-speed (RCV) STS-1
signal contains an AIS. This
indicates a remote failure.
The locally received OC-3/OC-12
signal contains an AIS. This
indicates a remote failure.
FNC and FNC Customer Use Only
Suggested Corrective Action
• Verify that the facility testing is complete.
• Execute the RLS-LPBK command.
• Verify that the facility testing is complete.
• Execute the RLS-LPBK command.
• Verify that the facility testing is complete.
• Execute the RLS-LPBK command.
• Verify that the facility testing is complete.
• Execute the RLS-LPBK command.
• Verify that the facility testing is complete.
• Execute the RLS-LPBK command.
Suggested Corrective Action
• Retrieve the alarms at upstream sites.
• Clear any upstream service-affecting
alarms.
Retrieve the alarms at the upstream site.
There should be an OC-3/OC-12 LOS or
other service-affecting alarm reported at
the upstream site.
3.4: ACTLPBKT
Vol. ll, Page 480.3-6