Installation Guide-R03

Chapter 5 | Port Connections
How to Connect to Twisted-Pair Copper Ports
– 40 –
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.
1000BASE-T Cable Requirements
All Category 5 UTP cables that are used for 100BASE-TX connections should also
work for 1000BASE-T, providing that all four wire pairs are connected. However, it is
recommended that for all critical connections, or any new cable installations,
Category 5e (enhanced Category 5) or Category 6 cable should be used. The
Category 5e and 6 specifications include test parameters that are only
recommendations for Category 5. Therefore, the first step in preparing existing
Category 5 cabling for running 1000BASE-T is a simple test of the cable installation
to be sure that it complies with the IEEE 802.3-2008 standards.
6 Receive Data minus (RD-)
GND (Positive Vport)
Transmit Data minus (TD-)
-52V power (Negative Vport)
7 GND (Positive V
port) -52V power (Negative Vport)
8 GND (Positive Vport) -52V power (Negative Vport)
* The “+” and “-” signs represent the polarity of the wires that make up each wire pair.
Table 5: 10/100BASE-TX MDI and MDI-X Port Pinouts
Pin
MDI Signal Name
*
MDI-X Signal Name
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+)
-52V power (Negative V
port)
Bi-directional Pair B Plus (BI_DB+)
GND (Positive Vport)
2 Bi-directional Pair A Minus (BI_DA-)
-52V power (Negative Vport)
Bi-directional Pair B Minus (BI_DB-)
GND (Positive Vport)
3 Bi-directional Pair B Plus (BI_DB+)
GND (Positive Vport)
Bi-directional Pair A Plus (BI_DA+)
-52V power (Negative Vport)
4 Bi-directional Pair C Plus (BI_DC+)
-52V power (Negative V
port)
Bi-directional Pair D Plus (BI_DD+)
GND (Positive Vport)
5 Bi-directional Pair C Minus (BI_DC-)
-52V power (Negative V
port)
Bi-directional Pair D Minus (BI_DD-)
GND (Positive Vport)
6 Bi-directional Pair B Minus (BI_DB-)
GND (Positive Vport)
Bi-directional Pair A Minus (BI_DA-)
-52V power (Negative Vport)
7 Bi-directional Pair D Plus (BI_DD+)
GND (Positive V
port)
Bi-directional Pair C Plus (BI_DC+)
-52V power (Negative Vport)
8 Bi-directional Pair D Minus (BI_DD-)
GND (Positive V
port)
Bi-directional Pair C Minus (BI_DC-)
-52V power (Negative Vport)