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Status LEDs
Table 2 defines the media converter's LEDs.
LED
State
PWR
ON
LNK
ON
ACT
ON
FDX
ON
OFF
M/L ON
ON
OFF
MDI/MDI-X Button
An RJ-45 port on a 100 Mbps Ethernet network device can have one of two
possible wiring configurations: MDI or MDI-X. The RJ-45 port on a PC, router
or bridge is typically wired as MDI, while the twisted pair port on a switch or
hub is usually MDI-X.
To connect two 100 Mbps network devices together that have dissimilar port
wiring configurations, such as MDI to MDI-X, you use a straight-through
cable. To connect two network devices that have an RJ-45 port with the same
wiring configuration, such as MDI to MDI, you use a crossover cable.
The RJ-45 port on the media converter features an MDI/MDI-X button. You
can use this button to configure the twisted pair port on the media converter
as either MDI or MDI-X. This feature allows you to use a straight-through
cable regardless of the type of end-node connected to the port.
Note
After a using the MDI/MDI-X button to change between the two
settings, you must reset the media converter by powering OFF then
powering ON the unit.
Table 2 Status LEDs
Color
Description
Green
Power is applied to the media converter.
Green
A link has been established on the port.
Green
Data is being received on the port.
Green
The port is operating in full-duplex mode.
The port is operating in half-duplex mode.
Green
The MissingLink feature is activated on the media
converter.
The MissingLink feature is disabled and the media
converter is operating in the link test mode.
AT-MC100 Series Installation Guide
3
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