TRXMIM OPERATING SPECIFICATIONS
Page 2-8
2.4 TRXMIM OPERATING SPECIFICATIONS
This section describes the operating specifications for each of the
active Token Ring concentrator modules. Cabletron Systems
reserves the right to change these specifications at any time without
notice.
2.4.1 Media Filters
When connecting Token Ring stations that are not equipped with a
Type 3 Media Filter to either of the active UTP concentrator
modules (TRXMIM-22A / 24A), a Type 3 Media Filter, such as the
Cabletron Systems TRMF or TRMF-2, must be installed in line with
the lobe cable at the Token Ring station connection.
2.4.2 Connector Types
The concentrator modules’ TCU ports are internally crossed-over to
provide connection of straight-through station lobe cabling via
female RJ-45 receptacles on the front panel. Figure 2-6 shows the
pinouts required for the mating (male) RJ-45 connectors for both
UTP and STP versions of the concentrator modules.
Figure 2-6. Concentrator Module TCU Port Pinouts.
MALE
RJ-45
8
7
6
5
4
3
2
1
TX+
RX–
RX+
TX–
Cable Shield*
Cable Shield*
*Cable Shield
not used
with UTP cabling
