The system has detected a virtual container tributary unit loss-of-pointer (LOP) condition. TU-LOP is derived by monitoring the TU overhead bytes V1 and V2. The system responds by transmitting AIS toward the DSX-1 and a Remote Defect Indication (RDI) signal back toward the fiber where the signal is being received.
|
Alarm Data |
Value/Meaning |
|---|---|
|
Severity Levels |
Critical (CR), Major (MJ), Minor (MN), Not Alarmed (NA), Not Reported (NR) Default: Major (MJ) |
|
ASAP Type |
VC12 Ring Channel |
|
AID Type |
VC-12 Ring Channel |
|
Date |
Month/day/year that the condition was detected |
|
Time |
Hour:minute:second that the condition was detected |
|
Probable Cause |
LOP (Loss of pointer) |
|
Effect on Service |
SA |
|
Alarm Entity Type |
VC12 |
|
Description |
inc. VC TU-LOP |
|
Likely Cause |
Unprotected failure of the OC-N OLIU at the near end; failure of an OLIU or DS1/E1 circuit pack at the far end. An unprotected circuit pack failed - SA. |
|
Visible Indication |
Lighted CR, MJ, or MN LED on the SYSCTL faceplate (when the severity level is provisioned to Critical, Major, or Minor, respectively) |
|
Action |
Proceed to Procedure 5-78: Clear "inc. VC" conditions/alarms. |
| November 2011 | Copyright © 2011 Alcatel-Lucent. All rights reserved. |