Nortel Networks 1750 manual For 10BASE-T operation, use category 3, 4, or 5 twisted-pair wiring

78 Appendix A Technical specifications

The following figure shows the 1000BASE-T (1000 GT) Ethernet interface full-height card for VPN Router 1750.

Figure 23 1000BASE-T (1000 GT) Ethernet interface card

Select cables for the card as follows, keeping in mind that this card is autonegotiating 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 21 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-

NN46110-316 03.01