Connecting A Utp Segment To An Epim-T - Cabletron Systems SEHI-22 User Manual

4.1.2 Connecting a UTP Segment to an EPIM-T

Before connecting a segment to the EPIM-T, check each end of the
segment to determine if the wires have been crossed over for the proper
connection. If the wires do not cross over, use the switch on the EPIM-T
to internally cross over the RJ45 port. Refer to Figure 4-2 to properly set
the EPIM-T crossover switch.
Position X
(crossed over)
1. RX+
2. RX-
3. TX+
4. NC
To connect an EPIM-T to a Twisted Pair Segment:
1. Connect the twisted pair segment to the module by inserting the RJ45
connector on the twisted pair segment into the RJ45 port on the
module. See Figure 4-2.
2. Check that the EPIM's LNK LED is on. If the LED is off, perform
each of the following steps until it is on:
a. Check that the 10BASE-T device at the other end of the twisted
pair segment is powered up.
b. Verify that the RJ45 connector on the twisted pair segment has the
proper pinouts.
c. Check the cable for continuity.
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5. NC
6. TX-
7. NC
8. NC
Position =
(not crossed over)
1. TX+
2. TX-
3. RX+
4. NC
Figure 4-2. EPIM-T Crossover Switch
5. NC
6. RX-
7. NC
8. NC
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4-3