NEC Univerge SV8500 Operation And Maintenance Manual page 77

- Symbols -
: Circuit Card in PIR/TSWR
: Card in SV8500 Server
: Faults to be detected
: Speech Path
: Fault Information flow
PCPro
Printer, etc.
(Note) Fault Information:
MJ, MN faults
Power OFF, blown fuse
CPU faults
Speech Path faults
RGU, Howler faults
CPU Clock faults
SYMBOL
CPU
EMA Emergency Alarm Controller
IOC
LC/TRK
Figure 1-12 Block Diagram of Fault Detection (1-IMG)
CPU
(IOC)
Software abnormal
behavior monitor
MEANING
Central Processing Unit
I/O Controller
Line/Trunk
Ready
Clock
EXB
Ready
Clock
Fault
Information
(Note)
EMA
SYMBOL
EXB GT card
PWR Power Supply
TSW Time Division Switch
MUX Multiplexer
– 30 –
CHAPTER 1
Firmware
faults
MUX LC/TRK
Howler,
Ringer fault
PWR
TSW
PWR
Howler,
Ringer fault
Power off,
blown fuse
MEANING
General