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BRIM-E6 USER’S GUIDE Page 25
APPENDIX A
EPIM SPECIFICATIONS
This appendix provides specifications for Cabletron’s Ethernet Port
Interface Modules (EPIMs).
A.1 EPIM-T (10BASE-T TWISTED PAIR PORT)
Internal Transceiver: Cabletron Systems TPT
10BASE-T Twisted Pair Transceiver
Type: 8 Pin RJ-45 Jack
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.
Figure A-1. Cross-over Switch on the EPIM-T
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