Raisecom RC3000 PCM User Manual page 24

find problems in time.
MPU control modue: this module is the system controller; once powered on it will check
the data saved in the memory, if the data is valid MPU will configure device according to
saved data, otherwise it will generate default data according to hardware status and set
the default data to RC7850 for cross connect, and than system will work normally. In
normal work status MPU will collect information of line-board module, user-board module,
RC7850 module and alarm continuously and control all the modules. MPU also answers
user queries, receives configuration operations, saves new configuration in memory
memory module and displays system information and alarms.
Architecture of RC3000 is as figure16:
Management
Fan
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½ Ó µ ¥ Ô ª
Power
supply
Power
supply
CONSOLE
Center
multiplexer
° å
Up-link
card
Up-link card
Alarm and system indicator
lights
User User
interface
card
User interface
card
Figure 16
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interface User
card
User interface User interface
card
interface
card
card