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2.5 Network Communication Interfaces
2.5.1 10Base-T RJ-45 Pinout
The 10BASE-T Ethernet network (RJ-45) system is used in the iServer for network
connectivity. The 10 Mbps twisted-pair Ethernet system operates over two pairs of wires.
One pair is used for receiving data signals and the other pair is used for transmitting data
signals. This means that four pins of the eight-pin connector are used.
2.5.2 10Base-T Crossover Wiring
When connecting the iServer directly to the computer's network port, the transmit data
pins of the computer should be wired to the receive data pins of the iServer, and vice
versa. The 10Base-T crossover cable with pin connection assignments are shown below
Use straight through cable for connecting the iServer to an Ethernet hub. The
ports on the hub are already crossed.
Figure 2.8 RJ45 Pinout
Figure 2.9 10Base-T Crossover Cable Wiring
Pin
Name
Description
1
+Tx
+ Transmit Data
2
-Tx
- Transmit Data
3
+RX
+ Receive Data
4
N/C
Not Connected
5
N/C
Not Connected
6
-Rx
- Receive Data
7
N/C
Not Connected
8
N/C
Not Connected
9
.
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