A.4 straight-through wiring – Enterasys Networks Fast Network 10 User Manual

Page 116

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Appendix A: Technical Specifications

Page A-4

Fast Network 10 User Guide

A.4 STRAIGHT-THROUGH WIRING

If the twisted-pair link segment is to join two ports on a switch, and only
one of the ports has an internal crossover, the two pairs of wires must be
straight-through, as shown in Table A-2.

a. The “+” and “-” signs are used to
represent the polarity of the two wires that
make up each wire pair.

Table A-1

Pin Assignments

Pin

Assignment

a

1

Tx+

2

Tx-

3

Rx+

6

Rx-

Table A-2

Straight-through RJ45 Pin Assignments

Hub

Device

1 (Tx+)

1 (Tx+)

2 (Tx-)

2 (Tx-)

3 (Rx+)

3 (Rx+)

6 (Rx-)

6 (Rx-)

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