Connecting Utp Cables - Cabletron Systems SmartSTACK 100 ELS100-16TX Getting Started

TO
ELS100-16TX RJ-45
TX+ 1
TX- 2
Note: RX+/RX- and
TX+/TX- must share a
common color pair.
RX+ 3
RX- 6
– 4 –

Connecting UTP Cables

Before connecting a segment to the ELS100-16TX, check each
end of the segment to verify wire crossover.
Caution: To establish a link, you must have an odd number of
crossovers (preferably one) between 10BASE-T devices of the
same type (i.e., from repeater to repeater or transceiver to
transceiver).
Connect a twisted pair segment to the ELS100-16TX as follows:
1. Ensure that the device at the other end of the segment is
2. Connect the twisted pair segment to the ELS100-16TX by
3. Verify that a Link exists by checking that the port LINK LED is
TO
100Base-T Device Port
TX+
1
TX-
2
RX+
3
RX-
6
4. Repeat step 2, above, until all connections have been made.
connected to the segment and is powered ON.
inserting the RJ45 connector on the twisted pair segment into
the desired RJ45 port (refer to upper figure).
on (solid green). If the LINK LED is off, perform the following
steps until it is on:
a. Check that the 100BASE-T device at the other end of the
twisted pair segment is ON and connected to the segment.
b. Verify that the RJ45 connectors on the twisted pair segment
have the proper pinouts (refer to lower figure) and check the
cable for continuity.
c. Check that the twisted pair connection meets the dB loss
and cable specifications.
If a link is not established, contact the Cabletron Systems
Global Call Center. Refer to the Getting Help section at the
beginning of this guide for details.