Alarm Indicators - Lucent Technologies LambdaXtreme Alarm Messages And Trouble Clearing Manual

Office Alarms Panel

Alarm Indicators

....................................................................................................................................................................................................................................
Overview
CR/Prompt LED
MJ/Deferred LED
....................................................................................................................................................................................................................................
1 - 8
The alarm indicators indicate the overall operating status of the
™
LambdaXtreme Transport NE. The three LEDs indicate the severity
of the alarms present on the NE in both the SONET and SDH
schemes. LED indicators designate that the Critical Alarm, Major
Alarm, or Minor Alarm is active (including alarm testing) in the
SONET environment. These LEDs are also used to indicate that the
Prompt Alarm or Deferred Alarm is active (including alarm testing) in
the SDH environment. The office audible and visual alarms is
activated when any one of these indicators is activated.
When multiple conditions with two or more different alarm attributes
are active, only the highest level alarm with be active (both audible
and visual). When the highest severity alarm has been cleared, the
next highest alarm, if any, will be activated (both audible and visual).
In the SONET environment, Critical Alarms indicate that a severe,
service-affecting condition has occurred and immediate corrective
action is imperative regardless of the time of day or day of week.
In the SDH environment, Prompt Maintenance Alarm (PMA) is
generated to initiate activities (normally immediately) by maintenance
personnel to remove defective equipment in order to restore good
service and repair the failed equipment. This LED is red and is
labeled CR/Prompt.
In the SONET environment, Major alarms are used for hardware or
software conditions that indicate a serious disruption of service or the
malfunctioning or failure of important circuits. These troubles require
the immediate attention and response of maintenance personnel to
restore or maintain system capability. The urgency is less than in
critical situations because of a less immediate or impending effect on
service or system performance.
In the SDH environment, Deferred Maintenance Alarm ( DMA) is
generated when immediate action is not required by maintenance
personnel. For example,
•
when performance falls below a set threshold but the effect does
not warrant removal from service
•
when automatic changeover to standby equipment has been used
to restore service
Lucent Technologies - Proprietary
See notice on first page
Alarms and Indicators
365-575-783R1.1
Issue 1, June 2002