NEC QX-S5526P Installation Manual page 53

Installation Guide
QX-S5500 Series Ethernet Switches
IV. Pin arrangement
RJ-45 Ethernet interface is one of MDI (for routers and PCs) or MDI-X (for switches). Refer
to Table 5-2 and Table 5-3 about pin-out of RJ-45 Ethernet interface.
Pin
1
2
3
4
5
6
7
8
Pin
1
2
3
4
5
6
Figure 5-3 Crossing cable
Crossover cable
Table 5-2 Pin-out of RJ-45 MDI interface
10Base-T/100Base-TX
Signal Function
Tx+ Data transmission
Tx- Data transmission
Rx+ Data receive
Reserve N/A
Reserve N/A
Rx- Data receive
Reserve N/A
Reserve N/A
Table 5-3 Pin-out of RJ-45 MDI-X interface
10Base-T/100Base-TX
Signal Function
Rx+ Data receive
Rx- Data receive
Tx+ Data transmission
Reserve N/A
Reserve N/A
Tx- Data transmission
5 Network connection of the switch
1
white/orange
2
white/green
3
4
5
white/blue
6
7 white/brown
8
1
white/green
2
3
white/orange
4
5
white/blue
6
7
white/brown
8
Signal
BIDA+
BIDA-
BIDB+
BIDC+
BIDC-
BIDB-
BIDD+
BIDD-
Signal
BIDB+
BIDB-
BIDA+
BIDD+
BIDD-
BIDA-
5-3
orange
blue
green
brown
green
blue
orange
brown
1000Base-T
Function
Line of bi-directional data A+
Line of bi-directional data A-
Line of bi-directional data B+
Line of bi-directional data C+
Line of bi-directional data C-
Line of bi-directional data B-
Line of bi-directional data D+
Line of bi-directional data D-
1000Base-T
Function
Line of bi-directional data B+
Line of bi-directional data B-
Line of bi-directional data A+
Line of bi-directional data D+
Line of bi-directional data D-
Line of bi-directional data A-