Nortel DMS-100 Series Maintenance Manual page 208

7-4 Star Remote System manual maintenance
Table 7-2 Star Hub alarms (Sheet 2 of 2)
Failure
The two secondary breakers (01 and 11)
are OFF
Ringing generator failure
Power supply failure
Both ringing generators fail
NTTR73AA universal maintenance pack
(UMP) failure (one or both)
Single unit out-of-service (not off-line)
Both units out-of-service (not off-line)
Alarm batter supply (ABS) power failure
Main power down below 41 V
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.
If a component fails in the Star Hub, the following table identifies Star Hub
response and general recovery methods.
Table 7-3 Star Hub component failure and general recovery methods (Sheet 1 of 2)
Hub component failure
RCP card failure
C-side message link
297-8353-550 Standard 05.01 March 2001
Alarm
Critical
Major
According to
host alarm
Critical
Minor
According to
host alarm
According to
host alarm
Major
Major
Star Hub response and general recovery methods
The remote controller pack (RCP) card in the mate unit takes over control
of the C-side links, UMPs, line drawers, and ringing generators.
When a message link fails, the unit connected to it drops activity. The
mate unit takes control over all other C-side links, ringing generators,
UMPs, and line drawers.
LED
Set by name
Software Critical
Software Major
Software -
Software Critical
Software Minor
Software -
Software -
Hardware Major
Hardware Major
Location
FSP
FSP
-
FSP
FSP
-
-
FSP
FSP