Allied Telesis AT-MC103ST/FSx - Manual (Page 15)

AT-MC100 Series Installation Guide
3
Status LEDs
Table 2 defines the media converter’s LEDs.
Table 2 Status LEDs
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.
LED State Color Description
PWR ON Green Power is applied to the media converter.
LNK ON Green A link has been established on the port.
ACT ON Green Data is being received on the port.
FDX ON
OFF
Green The port is operating in full-duplex mode.
The port is operating in half-duplex mode.
M/L ON ON
OFF
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.