The system has detected a loss-of-frame (LOF) condition in an incoming OC-N signal. LOF is declared when an out-of-frame (OOF) condition (four consecutive errored STS-1 framing patterns) persists for a period of 3 ms.
|
Alarm Data |
Value/Meaning |
|---|---|
|
Severity Levels |
Critical (CR), Major (MJ), Minor (MN), Not Alarmed (NA), Not Reported (NR) SA Default: Critical (CR) NSA 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 |
LOF (Loss of frame) |
|
Effect on Service |
SA or NSA |
|
Alarm Entity Type |
OC3, OC12, OC48, or OC192 |
|
Description |
inc. OC3 LOF, inc. OC12 LOF, inc. OC48 LOF, or inc. OC192 LOF |
|
Likely Cause |
The upstream OCN terminal equipment failed or there is incorrect OCN port provisioning at either the upstream OCN terminal equipment or the local network element. An unprotected line/port carrying service failed: SA. A protected line/port failed: NSA. |
|
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 5-68: Clear "inc. OCN" alarms. |
| November 2011 | Copyright © 2011 Alcatel-Lucent. All rights reserved. |