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Quad Fiber Remote (QDFR) Unit Installation and Maintenance Practice
Troubleshooting Menu
The Troubleshooting menu
equipment in the circuit and presents them in both Real-Time and 7-Day historical format.
The Definitions option from this menu provides definitions of terms and acronyms.
Shelf:
1
Unacknowledged Alarms:
CH 1 DSX-1 (Network) Rx
CH 1 DS1 (Customer)
CH 2 DSX-1 (Network) Rx
CH 2 DS1 (Customer)
CH 3 DSX-1 (Network) Rx
CH 3 DS1 (Customer)
CH 4 DSX-1 (Network) Rx
CH 4 DS1 (Customer)
Troubleshooting Guidance Screen
The Troubleshooting Guidance screen
recommendations. The QDFR reads the operational status of the unit and returns Trouble-
shooting Guidance, or hints, as to the probable cause of the trouble.
Shelf:
1
Unacknowledged Alarms:
- A Fiber Loss of Sync (FLOS) condition (OPT LED is solid Red) indicates that
end-to-end fiber synchronization does not exist between the fiber devices on a
given loop. The problem can exist for any number of reasons, but is most likely
related to some kind of loop fault.
- The condition could be related to a new installation where the field
equipment has not yet been installed (or it has been removed in error), but it
could also be related to a continuity problem due to facility trouble.
- If the condition is not due to the lack of termination, clear the office by
temporarily connecting an QDFR Remote at the network side of the loop. If
the open condition clears, i.e., the FLOS indication goes away (OPT LED is
extinguished), the problem is beyond that point.
22
(Figure
27) compiles information received from all facilities and
Slot:
11
Total Access System
Troubleshooting
Currently Active
Rx
Rx
Rx
Rx
QDFC Loop
QDFR Loop
1. Troubleshooting Guidance
2. Definitions
3. Detailed Status
Figure 27. Troubleshooting Menu
(Figure
Slot:
15
Total Access System
Fiber Loss of Sync
Figure 28. Troubleshooting Guidance Screen
Previous 7 Days
OK
OK
LOS
LOS
OK
OK
LOS
LOS
OK
OK
LOS
LOS
OK
OK
LOS
LOS
LOS
LOS
LOS
LOS
4. Performance History
5. Alarm History
R. Restart history for this screen
Selection:
28) analyzes this information and makes repair
mm/dd/yy hh:mm
mm/dd/yy hh:mm
61181307L7-5E
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