8
Installation Guide
TX
RX
SM
PWR
10BASE-FL
10BASE-T
™
“twister”
2111
LK
AT
LK
AT
MDI-II / MDI-X Switch
(default is MDI-II)
PWR
10BASE-2
10BASE-T
™
“twister”
2111
TX
RX
LK
LK
AT
AT
PWR
10BASE-FL
10BASE-T
™
“twister”
2111
II
x
MDI-II / MDI-X Switch
(default is MDI-II)
LINK
ACT
ON
OFF
TERM
COL
A device that is wired straight through, needs one crossover connection:
If the cable is
straight through
crossover
the MDI-II to MDI-X switch setting should be
X
II
A device that is wired crossover, needs a parallel connection:
If the cable is
straight through
crossover
the MDI-II to MDI-X switch setting should be
II
X
MDI-II to MDI-X Switch
All “twister” media converters with twisted-pair ports have an MDI-
II
to
MDI-X switch that eliminates the need for crossover cables. The switch
allows simple setup in either straight through or crossover configurations. It
is located on the bottom of the unit directly below the RJ-45 connector, or
on the front panel between the two ports. Refer to the illustrations below.
When setting the MDI-
II
to MDI-X switch, observe the positioning of the
following symbols:
• The parallel symbol (
II
) indicates a straight through or parallel
connection. (default)
• The cross symbol (
X
) indicates a crossover connection.
These symbols are clearly marked on the unit. Using a pointed object,
simply slide the switch in the direction of the appropriate symbol, or press
the switch to the desired setting. Use the following table as a guide:
