Allied Telesis AT-MC12T - Manual

The CentreCOM
AT-MC12T
Media Converter User’s Guide
Overview
The Allied Telesyn AT-MC12T is used in addition to a transceiver
(MAU) to convert another Ethernet physical layer to 10BASE-T. It is
connected to a transceiver of the required conversion type. The
power adapter supplies power to the AT-MC12T and to the attached
transceiver.
Table 1: Possible Media Conversion
MDI/MDI-X Switch
The MDI/MDI-X switch located on the side of the unit, is a straight-
through crossover cable selection switch. It enables the 10BASE-T
(RJ45) port to be connected to a repeater or to a DTE without using a
special crossover cable.
The default setting of the switch is MDI-X, which means you can
connect the 10BASE-T port to a workstation or to any other DTE that
uses a straight-through cable. In the MDI configuration, slide the
switch to the MDI side and you can connect the 10BASE-T port to a
repeater/hub/concentrator using a straight-through cable.
Figure 1: Typical Configuration
Transceiver (MAU) Conversion Type
MC12T MX40F, MX55F, MX50
(10BASE-FL MAU) UTP—Fiber Optic
MC12T MX10S
(10BASE2 MAU) UTP—Thin Coax
10BASE-T
REPEATER
or 10BASE-T
WORKSTATION
NODE
NODE
NODE
AT-MC12T AT-MX