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DEFINITY Enterprise Communications Server Release 6
Installation and Test for Multi-Carrier Cabinets
555-230-112
Issue 5
May 1998
Test the System
Page 4-13LED Indicators
4
LED Indicators
Refer to
DEFINITY Enterprise Communications Server Release 6 Maintenance for
R6r
for detailed alarm and LED descriptions. If a maintenance object begins to
fail some periodic tests, the system generates an alarm. The system identifies 3
levels of alarms:
■ Major Alarms — Failures that cause critical degradation of service and
require immediate attention.
■ Minor Alarms — Failures that cause some degradation of service, but do
not cause a critical portion of the system to be inoperable. This condition
requires action, but its consequences are not immediate. Problems might
be impaired service to a few trunks or stations or interfering with one
feature across the entire system.
■ Warning Alarms — Failures that cause no significant degradation of
service or failures in equipment external to the system. Warning alarms
are not reported to the attendant console or INADS.
Alarms are communicated to the system users and technicians by entries in the
alarm log and the lighting of LEDs located on the attendant console, on all circuit
packs, and, optionally, on customer-designated voice terminals.
Attendant Console LEDs
The console has 2 red LEDs, labeled “ALM” and “ACK”. The ALM LED lights
steadily when there is a major or minor alarm at the system cabinet. The ACK
LED lights steadily if the alarm has been successfully reported to INADS. If the
system is unable to report the alarm to INADS, the LED flashes; this signals the
attendant to call INADS and report the alarm.
Terminal Alarm Notification
Terminal Alarm Notification is an optional feature that displays several types of
alarms on voice terminals with administered feature buttons or the attendant
console. A maximum of 10 digital and/or hybrid voice terminals may be used.
When an alarm occurs, the green status LED associated with the assigned
button is in a steady state. The LED may be turned off by pressing the button
associated with the LED. If the LED is off and the alarm has not been resolved by
the time maintenance reschedules testing, the green status LED resumes its
steady state.