Allied-telesis AT-8550SP Manual de usuario descargar pdf (Pagina 84)

Appendix A: Technical Specifications

Table 14 lists the RJ-45 pin signals for the two 10/100/1000-Base-T ports

on the AT-8550GB switch when the ports are operating at 1000 Mbps.

4 Unused Unused

5 Unused Unused

6 RX- and Vport-2 TX- and Vport-2

7 Unused Unused

8 Unused Unused

1. Vport-1 can be positive (+) or negative (-), depend-

ing on the requirements of the powered device con-

nected to a port.

2. Vport-2 can be positive (+) or negative (-), depend-

ing on the requirements of the powered device con-

nected to a port. If Vport-1 is positive, then Vport-2

will be negative. If Vport-1 is negative, then Vport-2

will be positive.

Table 14. MDI and MDI-X Pin Signals (1000Base-T)

MDI Configuration MDI-X Configuration

Pinout Pair Pinout Pair

1 Pair 1 + 1 Pair 2 +

2 Pair 1 - 2 Pair 2 -

3 Pair 2 + 3 Pair 1 +

4 Pair 3 + 4 Pair 4 +

5 Pair 3 - 5 Pair 4 -

6 Pair 2 - 6 Pair 1 -

7 Pair 4 + 7 Pair 3 +

8 Pair 4 - 8 Pair 3 -

Table 13. 10/100Base-T Port MDI/MDI-X Pin Signals with PoE

Pin MDI Signal MDI-X Signal

1 2 ... 79 80 81 82 83 84 85 86 87 88 89 90

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Allied-telesis AT-8550SP Manual de usuario Pagina 84