Cabletron Systems SEH-34 - Manual (Page 22)

INSTALLATION REQUIREMENTS/SPECIFICATIONS
Page 2-10
2.3 EPIM SPECIFICATIONS
EPIMs let you connect the SEH to the main network using different
media types. Cabletron Systems offers a variety of EPIMs. The
following sections explain specifications for each EPIM.
2.3.1 EPIM-T
The EPIM-T is an RJ45 connector supporting UTP cabling. It has an
internal Cabletron Systems TPT-T™ 10BASE-T Twisted Pair
Transceiver.
The slide switch on the EPIM-T determines the cross-over status of
the cable pairs. If the switch is on the
X side, the pairs are internally
crossed over. If the switch is on the = side, the pairs are not internally
crossed over. Figure 2-3 shows the pinouts for the EPIM-T in both
cross-over positions.
Figure 2-3. EPIM-T Pinouts
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