Loss of signal is detected when the incoming E1 signal level is less than or equal to 35 dB below normal for N consecutive pulse intervals (N is greater than 10 and less than 255). Alcatel-Lucent 1665 DMX sends AIS downstream.
|
Alarm Data |
Value/Meaning |
|---|---|
|
Severity Levels |
Critical (CR), Major (MJ), Minor (MN), Not Alarmed (NA), Not Reported (NR) Default: Not Alarmed (NA) |
|
ASAP Type |
E1 Port |
|
AID Type |
E1 Port |
|
Date |
Month/day/year that the condition was detected |
|
Time |
Hour:minute:second that the condition was detected |
|
Probable Cause |
LOS (Loss of signal) |
|
Effect on Service |
SA or NSA |
|
Alarm Entity Type |
E1 |
|
Description |
inc. (from DSX) E1 LOS |
|
Likely Cause |
Hard failure of upstream equipment or facility (towards DSX-1) The E1 input was disconnected at either the backplane or the DSX-1 Equipment is failed or removed at DSX-1. |
|
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 5-56: Clear "inc. (from DSX) E1" alarms. |
| November 2011 | Copyright © 2011 Alcatel-Lucent. All rights reserved. |