Rj45 Twisted-Pair Poe Ports; Gigabit Ethernet 1000Base-Tx Cabling Recommendations; Table 8: Rj45 Poe Pin-Out Assignment; Table 9: Cabling Categories And 1000Basetx Compliance Defined - RuggedCom RuggedSwitch RSG2300 Installation Manual

2.7.2 RJ45 Twisted-Pair PoE Ports

The RSG2300P comes standard with two 10/100BaseTX IEEE 802.3af (PoE)
compliant Ethernet ports in Slot 2 (ports) and can accommodate two more, in
Slot 1. In addition to the 10/100BaseTX port features, the PoE ports provide
nominal 48 VDC at 350 mA (max 15.4W/port), auto-sensing and automatic power
off when cables are removed. Table 8 shows the RJ45 PoE pin-out assignment.
10/100BaseTx PoE Pin-out
Pin
1
2
3
6
4, 5, 7, 9

Table 8: RJ45 PoE pin-out assignment

2.7.3 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 all 4 pairs in 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 communication, new and pre-
existing communication paths should be verified for TIA/EIA-568-A compliance.
Table 9 summarizes the relevant cabling standards.
Cabling
Category
<5
5
5e
6
>6

Table 9: Cabling categories and 1000BaseTx compliance defined.

Follow these recommendations for copper data cabling in high electrical noise
environments:

Data cable lengths should be as short as possible, ideally limited to 3m (10ft)
in length. Copper data cables should not be used for inter-building
communications.
RuggedCom®
Description
RX + and Power -
RX - and Power -
TX + and Power +
TX - and Power +
NC
1000BaseTx
Compliant
New wire infrastructure required
No
Yes Verify TIA/EIA-568-A compliance
No action required. New installations should be
Yes
designed with Category 5e components or higher
Yes No action required
Connector and cabling standards to be
Yes
determined.
27
Required action
RuggedSwitch RSG2300 Installation Guide Rev108
Installation