86 Appendix A Technical specifications

Figure 33 1000BASE-T (1000 GT) Ethernet interface card (all models except VPN Router 2750 1100)

Select cables for this card as follows. Keep in mind that this card is auto-negotiating and uses the highest possible data rate:

For 1000BASE-T operation, use Category 5 four-pair Ethernet wiring. The cable must comply with the TIA 568 wiring specification. Nortel recommends a maximum length of 100 meters for the cable segment.

For 100BASE-TX operation, use Category 5 twisted-pair wiring: one pair each for transmit and receive operations. The cable must comply with the EIA 568 wiring specification. Nortel recommends a maximum length of 100 meters for the cable segment.

For 10BASE-T operation, use Category 3, 4, or 5 twisted-pair wiring.

The following table provides the pinouts for the 1000BASE-T (1000 GT) Ethernet interface card..

Table 22 1000BASE-T (1000 GT) Ethernet pinouts

12345678

CS260010A

Pin

Description

 

 

1

TP0+

 

 

2

TP0-

 

 

3

TP1+

 

 

4

TP2+

 

 

5

TP2-

 

 

6

TP1-

 

 

7

TP3+

 

 

8

TP3-

 

 

NN46110-318 02.01

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Nortel Networks 2750 manual 1000BASE-T 1000 GT Ethernet pinouts, Pin Description