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Raisecom
iTN2100 (P100R002) Hardware Description
21 Cables
Raisecom Technology Co., Ltd.
247
Figure 21-4
Ethernet cable
21.2.3 Specifications
The Ethernet cables have two types:
Straight-through cable: used to connect devices of different types, such as a PC and a
switch/switch and router.
Crossover cable: used to connect devices of the same type, such as between 2
PCs/switches/routers, or between a PC and a router (they are divided into the same group)
Table 21-2 lists the line order of EIA/TIA568A and EIA/TIA568B standards.
Table 21-2
Line order of EIA/TIA568A and EIA/TIA568B standards
Connector 1(RJ45)
EIA/TIA568A
Connector 2(RJ45)
EIA/TIA568B
PIN 1
White/Green
PIN 1
White/Orange
PIN 2
Green
PIN 2
Orange
PIN 3
White/Orange
PIN 3
White/Green
PIN 4
Blue
PIN 4
Blue
PIN 5
White/Blue
PIN 5
White/Blue
PIN 6
Orange
PIN 6
Green
PIN 7
White/Brown
PIN 7
White/Brown
PIN 8
Brown
PIN 8
Brown
Straight-through cable
Both 2 RJ45 connectors of the straight-through cable use the same line order. In general, they
follow the EIA/TIA568B standard.
Figure 21-5 shows the line order of the straight-through cable.