Star Hub Alarms - Nortel DMS-100 Series Maintenance Manual

The following guidelines are followed when responding to alarms:
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For alarm clearing procedures, see the "Star Remote System Alarm clearing
procedures" chapter in this manual.
Alarms are generated as a result of
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Star Hub alarms

The following table identifies the alarms that are supported by the Star Hub.
Table 7-2 Star Hub alarms (Sheet 1 of 2)
Failure
Fuse failure
Missing -48 V talk battery supply (note )
Both NTTR77AA remote control
processors (RCP) removed
All converter breakers OFF or at least the
two main breakers (00 and 10) are OFF
Note 1: When a major alarm is activated, the MAJ light emitting diode (LED) on the frame
supervisory panel (FSP) is lit, the major signal distribution (SD) point is set, and the major scan point
is set.
Note 2: The level of scanning for the talk battery loss is on an individual shelf basis.
Note 3: When a critical alarm is activated, the dc panel LED is lit, the critical SD point is set, and the
CRIT scan point is also activated.
When more than one alarm of the same severity is displayed on the MAP
display screen, clear the alarms from the left of the screen to the right.
If, while fixing an alarm, an alarm of greater severity occurs, respond to the
new alarm. Do not continue attempts to clear the less severe alarm.
peripheral module (PM) failure (both units)
unit failure (takeover)
DS-1 link errors
ringing generator failure
circuit card failure
dc/dc converter failure
dc panel failure
threshold of out-of-service (OOS) lines exceeded (software alarm)
Alarm
Major (note 1 )
Critical (note 3)
Critical
Critical
DMS-100 Family NA100 Star Remote System XPM15 and up
Star Remote System manual maintenance 7-3
LED
Set by name
Hardware Major
Hardware Critical
Hardware Critical
Hardware Critical
Location
FSP
FSP
FSP
FSP