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Table 1-250 Buttons
Before removing a board, press and hold the OFL button for about 6
seconds until the OFL indicator turns on. Then, you can remove the
board.
Table 1-251 Indicators
Before the board registration: The green indicator blinks twice every
second (2 Hz).
After the registration of the board: If the green indicator blinks once
every two seconds (0.5 Hz), the system is working properly.
If the red indicator is off, the board is working properly. If the red
indicator is on, the board is powered off.
Functional Specifications
Table 1-252 Functions and features
Reliability and
availability
The 3+1 backup mode is used. The four SFUs balance services at the
same time (Two SFUs integrate on two MPUs). If one SFU is faulty
or replaced, the other three SFUs automatically take over its services
to prevent service interruptions.
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