An off-frequency condition has been detected on the incoming OC-n line synchronization reference signal based on the frequency offset of the reference relative to the local oscillator.
|
Alarm Data |
Value/Meaning |
|---|---|
|
Severity Levels |
Critical (CR), Major (MJ), Minor (MN), Not Alarmed (NA), Not Reported (NR) Active default: Minor (MN) Standby default: Minor (MN) |
|
ASAP Type |
OCn Port |
|
AID Type |
OC-n Line |
|
Date |
Month/day/year that the condition was detected |
|
Time |
Hour:minute:second that the condition was detected |
|
Probable Cause |
SYNCOOS (Active reference off frequency) SYNC (Standby reference off frequency) |
|
Effect on Service |
NSA |
|
Alarm Entity Type |
OCn |
|
Description |
inc. line sync. ref. OOL |
|
Likely Cause |
A synchronization problem at the upstream node may cause the TX interfaces (at the upstream node) to transmit off frequency. The alarm could also be the result of an undetected hardware fault on one or both of the local main circuit packs. An incoming signal fault that interferes with clock recovery could also cause the alarm. |
|
Visible Indication |
Lighted CR, MJ, or MN LED on the SYSCTL faceplate (when the severity level is provisioned to Critical, Major, or Minor, respectively) and a flashing Fault LED on the alarmed circuit pack. |
|
Action |
Proceed to Procedure 5-63: Clear "inc. line sync. ref. OOL" alarm. |
| November 2011 | Copyright © 2011 Alcatel-Lucent. All rights reserved. |