Cabletron Systems SEH-34 User Manual
Page 42
CONNECTING TO THE NETWORK
Page 4-4
4.
Check that the link LED on the 10BASE-T Ethernet device and the
applicable LNK LED on the SEH are on. If the LEDs are not on,
perform each of the following steps until the LEDs are on:
a.
Check that the 10BASE-T device and the SEH have power.
b.
Verify the cabling between the SEH and the 10BASE-T device.
c.
Check the cable for continuity.
If a link has not been established, contact Cabletron Systems
Technical Support.
4.1.3
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 4-3 to
properly set the EPIM-T cross-over switch.
Figure 4-3. EPIM-T Cross-over Switch
Position =
(not crossed over)
1. TX+
2. TX-
3. RX+
4. NC
5. NC
6. RX-
7. NC
8. NC
Position X
(crossed over)
1. RX+
2. RX-
3. TX+
4. NC
5. NC
6. TX-
7. NC
8. NC