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LEDs on the Optical DAC-SMs
The following table describes the LEDs on the Optical DAC-SMs:
LED
Power
Good
Fail
Redun
LOF
LOS
296-1011-200 Rel. 5.0, Doc. Rev. 08.01
State
Off
On (green)
On (green)
Off
Flashing green
Off
On (red)
Off
On (green)
Off
On (orange)
Off
On (orange)
Note: There are no LEDs on the Optical DAC-LTMs.
Chassis Connections
Checking the LEDs
Meaning
Power off
Power on
Successful system boot: no errors
detected
No power: failure detected or on standby
Code loading during system boot
No power
Failure detected
No power or no redundancy
A working redundant configuration
Normal
The SONET/SDH framing bytes for A1 or
A2 are wrong or corrupted.
Normal
The designated port has a loss of carrier
condition, due to a faulty connection with
an SC connector on the receive side or a
physical break in the fiber.
3-61
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