e LAN 2 port (Optical) — If desired, connect an IP fiber cable terminated with
2
OPTICAL
an LC connector.
NOTES: • Extron does not supply the plug-in SFP module for the Optical
network port.
• The factory default IP address for this port is 192.168.1.2.

RJ-45 port wiring

It is vital that your Ethernet cables be the correct cable type and that they be properly
terminated with the correct pinout. Ethernet links use Category (CAT) 5e or CAT 6,
unshielded twisted pair (UTP) or shielded twisted pair (STP) cables, terminated with RJ-45
connectors. Ethernet cables are limited to a length of 328 feet (100 m).
NOTES: • It is crucial to the effective operation of VN-Matrix 325 that sufficient data
throughput be achieved, especially where multiple sources are encoded.
The network efficiency is directly affected by the speed and configuration
of each element, such as switchers and routers, within its infrastructure.
The VN-Matrix 325 system achieves optimum transmission results over a
dedicated 1 Gbps network (1000Base-T, also known as Gigabit Ethernet).
• Do not use standard telephone cables. Telephone cables do not support
Gigabit Ethernet.
• Do not stretch or bend cables. Transmission errors can occur.
The Ethernet cable can be terminated as a straight-through cable or a crossover cable and
must be properly terminated for your application (see figure 12).
• Crossover cable — Direct connection between the computer and a VNC 325 encoder
• Patch (straight) cable — Connection of a VNC 325 encoder to an Ethernet LAN
A cable that is wired as T568A at one end
and T568B at the other (Tx and Rx pairs
reversed) is a "crossover" cable.
A cable that is wired the same at both ends is
called a "straight-through" cable, because
no pin/pair assignments are swapped.
12345678
RJ-45
Connector
Insert Twisted
Pair Wires
Pins:
Crossover Cable Straight-through Cable
Pin
1
2
3
4
5
6
7
8
Wire color
White-green
Green
White-orange
Blue
White-blue
Orange
White-brown
Brown
Wire color
T568A T568B
End 1 End 2 End 1 End 2
White-orange
Orange
White-green
Blue
White-blue
Green
White-brown
Brown
Pin
1
2
3
4
5
6
7
8
Wire color
White-orange
White-green
Blue
White-blue
White-brown
Brown
Wire color
T568BT568B
White-orange
OrangeOrange
White-green
Blue
White-blue
GreenGreen
White-brown
Brown
Figure 12. RJ-45 Connector and Pinout Tables
VN-Matrix 325 Serial Digital Over IP CODEC • Installation and Setup 22