Pub. 42004-735L2D
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Table 33. Fiber Optic Port Indicators (Models LE300-MM and LE300-SM)
Indicator Function
NRZ
Glows green when the NRZ mode is enabled.
RM
Glows green on the Remote unit when Remote management is enabled.
Glows green on the Local unit when it has discovered a Remote unit with
Remote management enabled. The fiber port LED RM is the only LED
that should be lit on the modules under normal operation conditions.
NO LNK
Glows green when a fiber link has NOT been established.
SYM
Glows amber when a 4-bit to 5-bit (4b/5b) symbol encoding error in the
fiber line is detected.
Table 34. Copper Port Indicators (Models LE300-MM1 and LE300-SM1)
Indicator Function
ER
Flashes yellow whenever a line code violation is received.
LOS
Glows red when the RJ-48 is receiving no signal and is in an LOS
ALARM state. This condition will also send an RAI signal to the fiber
port. If the Fault Loopback is set to ON, and AIS will also be sent to the
local copper port.
PRBS
Glows green when the copper port receives a valid Pseudorandom Bit
Sequence (PRBS). It is OFF when the port is not receiving a PRBS.
TEST
Glows yellow when any loopback mode is active.
Table 35. Fiber Optic Port Indicators (Models LE300-MM1 and LE300-SM1)
Indicator Function
ER
Glows yellow when a fiber symbol error has been received.
LOS
Glows red when a fiber link is not established and is in a LOS ALARM
state.
RM
Glows green on the REMOTE unit when Remote Management is enabled.
Glows green on the HOST unit when it has discovered a manageable
REMOTE unit. Under normal operation this LED is the only LED that is
ON at the unit.
RAI
Glows yellow when a Remote Alarm Indication (RAI) is received on the
fiber port. This indicates a fault exists at the far end unit.