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2.7 Ethernet Ports
2.7.1 RJ45 Twisted-Pair Data Ports
RSG2288 Ethernet switches are equipped with up to nine 10/100/1000BaseTX
ports that allow connection to standard CAT-5 UTP cable with RJ45 male
connectors. All RS2000 series RJ45 RuggedSwitch products feature auto-
negotiation, auto-polarity, and auto-crossover functions. The RJ45 receptacles
can also accept and take advantage of screened (commonly known as
“shielded”) cabling. Figure 25 shows the RJ45 port pins configuration.
Figure 25 : RJ45 port pin configuration.
Pin 1 Pin 8
10/100BaseTx Pin-out
Pin Description
1 RX +
2 RX -
3 TX +
6 TX -
4, 5, 7, 9 NC
Table 7: RJ45 Ethernet pin assignment
2.7.2 Gigabit Ethernet 1000Base-TX Cabling Recommendations
The IEEE 802.3ab Gigabit Ethernet standard defines 1000 Mbit/s Ethernet
communications over distances of up to 100 meters using 4 pairs of category 5
(or higher) balanced, unshielded twisted-pair cabling. For wiring guidelines,
system designers and integrators should refer to the Telecommunications
Industry Association (TIA) TIA/EIA-568-A wiring standard that characterizes
minimum cabling performance specifications required for proper Gigabit Ethernet
operation. To ensure reliable, error-free data communications, new and pre-
existing communication paths should be verified for TIA/EIA-568-A compliance.
Table 8 summarizes the relevant cabling standards.
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RSG2288 Installation Guide rev103