H3C CR19000-16, Руководство по установке

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3-2
Cable pinouts
EIA/TIA cabling specifications define two standards: 568A and 568B for cable pinouts.
•
Standard 568A —pin 1: white/green stripe, pin 2: green solid, pin 3: white/orange stripe, pin 4:
blue solid, pin 5: white/blue stripe, pin 6: orange solid, pin 7: white/brown stripe, pin 8: brown
solid.
•
Standard 568B —pin 1: white/orange stripe, pin 2: orange solid, pin 3: white/green stripe, pin 4:
blue solid, pin 5: white/blue stripe, pin 6: green solid, pin 7: white/brown stripe, pin 8: brown
solid.
For the pinouts of common twisted pair cables, see the following tables. (A and B represent the two
ends of a cable.)
Table3-1 Straight-through cable pinouts
Pinout No. A B
1 Orange/white Orange/white
2 Orange Orange
3 Green/white Green/white
4 Blue Blue
5 Blue/white Blue/white
6 Green Green
7 Brown/white Brown/white
8 Brown Brown
Table3-2 Crossover cable pinouts
Pinout No. A B
1 Orange/white Green/white
2 Orange Green
3 Green/white Orange/white
4 Blue Blue
5 Blue/white Blue/white
6 Green Orange
7 Brown/white Brown/white
8 Brown Brown
NOTE:
Strictly follow the pinouts in the above tables when identifying or making the two types of Ethernet
cables to ensure communication quality.
Making an Ethernet twisted pair cable
1. Cut the cable to a length as required with the crimping pliers.
2. Strip off an appropriate length of the cable sheath. The length is typically that of the RJ-45
connector.