System Alarms - Nortel 1000E Maintenance Manual

Figure 13
Signaling Server LEDs

System alarms

Major and minor alarms can be displayed on the attendant console
when connected to the system. However, attendant consoles cannot be
connected to an MG 1000T and therefore cannot display MG 1000T alarms.
Major alarms
A major alarm indicates a fault that seriously interferes with call processing.
The causes of major alarms are listed in
minor alarms" (page
When an MG 1000E is equipped with a power fail transfer unit (PFTU),
a major alarm causes designated analog (500/2500-type) telephones to
connect directly to Central Office trunks. This is called a line transfer.
Minor alarms
A minor alarm indicates that the system hardware or software has detected
a fault requiring attention. The causes of minor alarms are listed in
"Causes of major and minor alarms" (page
A minor alarm is indicated on attendant consoles in customer groups
affected by the fault. A minor alarm indication on the console is an
optional feature, enabled and disabled on a customer basis through data
administration procedures.
Table 14
Causes of major and minor alarms
Alarm Cause
Major CPU or control bus failure
Program failure when attempting to load the system
Copyright © 2007, Nortel Networks
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55).
Nortel Communication Server 1000
Communication Server 1000E Maintenance
NN43041-700 01.02 Standard
Release 5.0 20 June 2007
System alarms 55
Table 14 "Causes of major and
55).
Table 14