User Manual

User’s Manual of UPOE-800G/UPOE-1600G/UPOE-2400G
59
APPENDIX A
A.1 MDI Settings
The Medium-Dependent Interface (MDI or RJ45) serves as the data/power interface between Ethernet elements. As such,
it has two optional connection methods to carry the power. Named Alternative A & B, Table 1 details the two power feeding
alternatives.
Pin Alternative A Alternative B
1 Vport Negative
2 Vport Negative
3 Vport Positive
4 Vport Positive
5 Vport Positive
6 Vport Positive
7 Vport Negative
8 Vport Negative
Table -1 Alternative Table
Delivering power through an RJ45 connector’s center tap (“Phantom Feeding”) guarantees that bi-directional data flow is
maintained, regardless of a module’s power status.
A.2 Power Device Classification Values
Class PD Current
Classification Period
[mA]
PD Power
Operation Period
[W]
Note
0 0 – 4 0.44 12.95 Default
1 9 12 0.44 3.84 Optional
2 17 -20 3.84 6.49 Optional
3 26 30 6.49 12.95 Optional
4 36 - 44 12.95 - 25 Optional