Edge-Core ECS3510-26P, Installation Manual, Page: 35 / 50

Chapter 5
| Port Connections
How to Connect to Twisted-Pair Copper Ports
– 35 –
Figure 17: RJ-45 Connector
1000BASE-T
Assignments
All 1000BASE-T ports support automatic MDI/MDI-X operation, so you can use
straight-through cables for all network connections to PCs, servers, or switches.
The table below shows the 1000BASE-T MDI and MDI-X port pinouts. These ports
require that all four pairs of wires be connected. Note that for 1000BASE-T
operation, all four pairs of wires are used for both transmit and receive.
RJ-45 Pin Numbers
Table 5: 10/100BASE-TX MDI and MDI-X Port Pinouts
Pin
MDI Signal Name
a
a. The “+” and “-” signs represent the polarity of the wires that make up each wire pair.
MDI-X Signal Name
1 Transmit Data plus (TD+)
-52V power (Negative V
port
)
Receive Data plus (RD+)
GND (Positive V
port
)
2 Transmit Data minus (TD-)
-52V power (Negative V
port
)
Receive Data minus (RD-)
GND (Positive V
port
)
3 Receive Data plus (RD+)
GND (Positive V
port
)
Transmit Data plus (TD+)
-52V power (Negative V
port
)
4 -52V power (Negative V
port
) GND (Positive V
port
)
5 -52V power (Negative V
port
) GND (Positive V
port
)
6 Receive Data minus (RD-)
GND (Positive V
port
)
Transmit Data minus (TD-)
-52V power (Negative V
port
)
7 GND (Positive V
port
) -52V power (Negative V
port
)
8 GND (Positive V
port
) -52V power (Negative V
port
)
1
1
Table 6: 1000BASE-T MDI and MDI-X Port Pinouts
Pin MDI Signal Name MDI-X Signal Name
1 Bi-directional Pair A Plus (BI_DA+) Bi-directional Pair B Plus (BI_DB+)
2 Bi-directional Pair A Minus (BI_DA-) Bi-directional Pair B Minus (BI_DB-)
3 Bi-directional Pair B Plus (BI_DB+) Bi-directional Pair A Plus (BI_DA+)