NEC QX-S5526P Installation Manual page 52

Installation Guide
QX-S5500 Series Ethernet Switches
Pin 1: white, orange, pin 2: orange, pin 3: white, green, pin 4: blue, pin 5: white, blue, pin 6:
green, pin 7: white, brown and pin 8: brown
III. Type of cable
1) Performance
An Ethernet cable depends on performance, and, category 3 or 4 or 5 or 5 e, 6 or 6 A and 7,
it's classified. Category 5 cables, category 5, 5e and category 6 are generally used in the
LAN.
Type of cable
category 5
category 5e
category 6
category 6A
2) Pin arrangement
It's possible to classify a cable of a twisted pair into a straight cable and a crossing cable by
a pinout.
A straight cable: The pin arrangement in both ends is based on the 568B standard so

that it may be indicated in Figure 5-2.
A crossing cable: The pin arrangement in the other end is based on the 568A standard

with the 568B standard for pin arrangement in one end so that it may be indicated in
Figure 5-3.
Table 5-1 The description of the Ethernet cable which is generally used
It's suitable for data communication by the max speed of 100Mbps with a
band margin of 100MHz.
It's suitable for data communication by the max speed of 1000Mbps with a
band margin of 100MHz.
It's suitable for data communication by the speed higher than 1Gbps with a
band margin of 250MHz.
It's suitable for data communication by the speed higher than 1Gbps with a
band margin of 500MHz.
Straight-through cable
Description
Figure 5-2 Straight cable
1
white/orange
2
3
4
5
6
7
white/brown
8
1
white/orange
2
3
4
5
6
7
white/brown
8
5-2
5 Network connection of the switch
orange
white/green
blue
white/blue
green
brown
orange
white/green
blue
white/blue
green
brown