Figure A-25
Wiring scheme EIA/TIA 568A or EIA/TIA 568B
EIA/TIA 568A
PIN 8
PIN 1
EIA/TIA 568B
PIN 8
PIN 1
EIA/TIA 568A
EIA/TIA 568B
PIN
a
Core Wire
b
PIN
Core Wire
1
Green-white
1
Orange-white
2
Green
2
Orange
3
Orange-white
3
Green-white
4
Blue
4
Blue
5
Blue-white
5
Blue-white
6
Orange
6
Green
7
Brown-white
7
Brown-white
8
Brown
8
Brown
NOTE
l
a. An RJ45 connector has eight pins.
l
b. The twisted pair wire connects to the RJ45 connector pin. The color of the plastic jacket is used
for the wire name.
Straight-Through and Crossover Cables
Ethernet cables are classified into straight-through and crossover cables according to the
wiring scheme used at the two ends of the cables. Interfaces on most devices can dynamically
adapt to straight-through cables and crossover cables. For interfaces that cannot dynamically
adapt to either type of cable, connect interfaces at the same layer using the crossover cables
and interfaces at different layers using the straight-through cables.
HUAWEI USG9500 Series
Hardware Guide
A Appendix
Issue 03 (2017-12-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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