NEAX2000 IVS
2
General Description
NDA-24293, Issue 2
Page 77
Chapter 7
Maintenance
Trouble Reporting and Diagnosis
The urgency of a fault is indicated by the MJ/MN lamp provided on the Power Card
and optional external alarm indicator. Details of the alarm indications are shown in
.
Faulty plug-in cards are quickly replaced with a spare providing minimum disruption
of service and no loss of system memory.
Table 7-1 Fault Detection Items
ITEM
DESCRIPTION
ALARM INDICATION POWER
CARD/EXTERNAL
ALARM INDICATOR
(OPTION)
REMARKS
MJ
MN
1
Reset Initial
Available
Available
Indication of MJ or
MN alarms is
software-controlled
on a per fault basis.
2
Data Transmission Error
between MP and FP/AP
Available
Available
3
FP/AP Card Down
Available
Available
4
Digital Interface Fault
Available
Available
5
BUS Card Fault
Available
Available
6
D
term
Line Fault
Available
Available
7
Station Line Fault
Available
Available
8
D-channel Circuit Down
Available
Available
9
Common Channel Down
Available
Available
10
Number of lockout station
exceeds a predetermined
value
Not Available
Available
11
SMDR Memory overflow
Available
Available
12
AC Power Down
Available
Available
13
DC Output Down
Available
Available
14
Fuse Blown
Available
Available