SmartFlex SR300
5.8.5
Ethernet Ports (ETH0 and ETH1)
Panel socket RJ45.
Pin
Signal mark
Description
Data flow direction
1
TXD+
Transmit Data – positive pole
Input/Output
2
TXD-
Transmit Data – negative pole
Input/Output
3
RXD+
Receive Data – positive pole
Input/Output
4
DC+
PoE power + (if it’s equipped by PoE)
5
DC+
PoE power + (if it’s equipped by PoE)
6
RXD-
Receive Data – negative pole
Input/Output
7
DC-
PoE power - (if it’s equipped by PoE)
8
DC-
PoE power - (if it’s equipped by PoE)
Table 12: Connection of Ethernet connector
Figure 15: Ethernet connector
The crossover UTP cable (Ethernet cable) plugs into the RJ45 connector labeled as ETH0
or ETH1 (see figure below).
Figure 16: Connection of Ethernet cable
The insulation strength of Ethernet ports from each other and from the rest of the router
(grounding) is dependent on the router version:
Router Version
Insul. Strength from Router
Insul. Strength between Ports
Without PoE
1.5 kV
1.5 kV
PoE PD
1.5 kV
none
PoE PSE
none
none
Table 13: Insulation strength of Ethernet ports
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