Cabletron Systems NBR-420 사용자 설명서

EPIMs enable the connection of the NBR to different media types. 
Cabletron Systems offers a variety of EPIMs. The following sections 
explain specifications for each EPIM.

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 

 side, the pairs are internally crossed 

over. If the switch is on the 

 side, the pairs are not internally crossed 

over. Figure B-1 shows the pinouts for the EPIM-T in both positions.

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

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