Back-To-Back Installation; Rack Mount Chassis Installation; At-Mcr12 Rack-Mount Chassis - Allied Telesis AT-MC101XL Installation Manual

The media converters have an additional feature, allowing the unit to
operate in 100 Mbps half-duplex mode. Certain applications require this
mode, for example, two media converters installed in a back-to-back
configuration (fiber-to-fiber) which are attached to unmanaged repeaters
and/or switches that auto-negotiates with the other. For instructions on
how to set up the media converter for this application, contact Allied
Telesyn Technical Support.

Back-to-Back Installation

Review the following before doing a back-to-back installation. See Figure 10
for an illustration of a back-to-back-media converter configuration.
During installation, setup, and testing of back-to-back media
converters, make sure each media converter is in the Link Test mode.
When two media converters are connected back-to-back with no UTP/
STP cables connected and when the NML/LNK TST switch is in the
OUT position (Link Test mode), the fiber REC LEDs on each converter
may flash. This is normal and will not affect the normal operation of
the converters.
When operating two media converters in a back-to-back configuration,
Allied Telesyn recommends that the MissingLink feature on one or
both of the converters be disabled. The MissingLink feature can be
disabled by placing the NML/LNK TST switch in the OUT position
(LNK TST mode). Disabling the Link Test mode does not interfere
with the converter's ability to pass network traffic.

Rack mount Chassis Installation

To install the media converter in the rack-mount chassis, refer to the
"AT-MCR12 Media Converter Chassis Installation Manual" or visit the
Technical Support area of Allied Telesyn's website at
www.alliedtelesyn.com. Figure 8 shows the AT-MCR12 rack-mount
chassis.
Note
M C R 1 2
Figure 8 AT-MCR12 Rack-mount Chassis
Installation Guide
7