– 4 –
Connecting UTP Cables
Before connecting a segment to the ELS10-26, check each end of
the segment to verify wire crossover.
Connect a twisted pair segment to the ELS10-26 as follows:
1. Ensure that the device at the other end of the segment is
connected to the segment and is powered ON.
2. Connect the twisted pair segment to the ELS10-26 by inserting
the RJ45 connector on the twisted pair segment into the
desired RJ45 port (refer to figure).
3. Verify that a Link exists by checking that the port
LINK
LED is
on (solid green). If the
LINK
LED is off, perform the following
steps until it is on:
a. Check that the 10BASE-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 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 Cabletron Systems
Global Call Center. Refer to the
Getting Help
section at the
beginning of this guide
for details.
4. Repeat step 2, above, until all connections have been made.
ELS10-26TX
STATUS
PORT STATUS MODE
10BASE-T/
100BASE-TX
FEPIM
2X 4X 6X 8X 10X 12X
14X 16X 18X 20X 22X 24X
MONX
26X
27
LINK
ST
A
TUS
LINK
ST
A
TUS
26
27
LINK
ST
A
TUS
LINK
ST
A
TUS
LINK
ST
A
TUS
LINK
ST
A
TUS
LINK
ST
A
TUS
LINK
ST
A
TUS
13
14
15
16
23
24
21
22
17
18
19
20
LINK
ST
A
TUS
LINK
ST
A
TUS
LINK
ST
A
TUS
LINK
ST
A
TUS
LINK
ST
A
TUS
LINK
ST
A
TUS
3
4
1
2
7
8
5
6
11
12
9
10
TX ACT
FDX MON
RX COL 100
USR
PWR
CPU
RESET
25
MON
COM
1
2
3
6
1
2
3
6
TX+
TX-
RX+
RX-
TX+
TX-
RX+
RX-
TO
ELS10-26 RJ-45 Port
TO
10Base-T Device Port
Note: RX+/RX- and
TX+/TX- must share a
common color pair.
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).
