Enterasys Networks BRIM-E6 Appendix a Epim Specifications, EPIM-T 10BASE-T Twisted Pair Port

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.

Position X (crossed over)

1. RX+	5. NC
2. RX-	6. TX-
3. TX+	7. NC
4. NC	8. NC

Position = (not crossed over)

1. TX+	5.	NC
2. TX-	6.	RX-
3. RX+	7. NC
4. NC	8. NC

Figure A-1. Cross-over Switch on the EPIM-T

BRIM-E6 USER’S GUIDE Page 25