Installation guide

Connecting to the Network
3-17
d. Verify that the RJ45 connectors on the twisted pair segment have the proper pinouts
(Figure 3-8 and Figure 3-9) and check the crossover cable
➂ for continuity. As shown in
Figure 3-8, a crossover cable is normally used between hub devices (e.g., RJ45 switch port
and another device port). A straight-through cable is used to connect between switches or
hub devices and an end user (computer).
Figure 3-8 Crossover Cable RJ45 Pinouts, Connection Between Hub Devices
Figure 3-9 Straight-Through Cable RJ45 Pinouts, Connections
Between Switches and End User
➀
RJ45 switch port
➂
RJ45-to-RJ45 crossover cable
➁
Other device port
➃
RX+/RX- and TX+/TX- connections. These
connections must share a common color pair.
➀
RJ45 switch port
➂
RJ45-to-RJ45 straight-through cable
➁
Other device port
➃
RX+/RX- and TX+/TX- connections. These
connections must share a common color pair.
TX+
TX
RX+
RX 2
1
3
6
TX+
TX
2
1
3
6
36771_21
RX+
RX
ÀÁ
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TX+
TX
RX+
RX 2
1
3
6
TX+
TX
2
1
3
6
36771_22
RX+
RX
ÀÁ
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Ã