Enterasys mrx Installation Instruction

Page A-1

The MRX/MRXI 10BASE-T HUB has a 50-pin Champ connector that
allows you to run a 50-pin feeder cable from the HUB to a punch-
down block.  This Appendix serves as an aid to wiring punch-down
blocks and twisted pair segments between your HUB and 10Base-T
Ethernet devices.

Table A-1 describes the pins and the color codes that are used in
twisted wiring at the HUB and the connections to a punch-down
block in the wiring closet at the HUB end of the attached segments.
Table A-2 shows the pins and the color codes that are used for wiring
at the punch down block at the 10BASE-T Ethernet device.  Figure A-
1 illustrates the pin layout for an RJ-45 connector and a punch down
block and Figure A-2 shows the wiring for a twisted pair segment.

To connect the HUB into an existing twisted pair wiring system:

1.

Connect a 50-pin feeder cable to the Champ connector on the
HUB.  In most cases, the feeder cable can be connected directly to
a punch down block using a Champ connector located on the
block.  If not, each segment must be connected at the punch down
block using the information in Figure A-2 and Table A-1.  This
table and figure describes the pins and the color codes that are
used to wire into a punch down block.

2.

Attach the feeder cable to the punch down block.

3.

Wire the punch down block end of the 4 pair twisted distribution
segment to the B column of the punch down block.  Refer to
Table A-1 and Figure A-2.

4.

Wire the RJ-45 wall plate end of the 4 pair twisted distribution
segment to the RJ-45 wall plate in the applicable office.

5.

Connect one of the RJ-45 connectors on the office drop cable to the
RJ-45 port in the office wall plate.