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A.2 EPIM CONNECTOR SPECIFICATIONS
The following sections outline specifications for each of the EPIM
connectors.
A.2.1 EPIM-T (10BASE-T Twisted Pair Port)
Internal Transceiver:Cabletron Systems TPT 10BASE-T Twisted Pair
Type:
A slide switch on the EPIM-T determines the cross over status of the
cable pairs. The switch residing on the X side indicates the pairs
internally cross over. If the switch resides on the = side, the pairs do
not internally cross over. See Fig. A-1.
Position X
(crossed over)
1. RX+
2. RX-
3. TX+
4. NC
Position =
(not crossed over)
1. TX+
2. TX-
3. RX+
4. NC
Figure A-1. Crossover Switch on the EPIM-T
Transceiver
8 Pin RJ-45 Jack
5. NC
6. TX-
7. NC
8. NC
5. NC
6. RX-
7. NC
8. NC
EPIM SPECIFICATIONS
Page A-7
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