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4-3
Matrix 12800 Switchers • Programming Guide
PRELIMINARY
Ethernet (LAN) Port
The rear panel Ethernet connector (figure 4-2) on the matrix switcher BME 0 can
be connected to the an Ethernet LAN or WAN. Communication between the
switcher and the controlling device is via Telnet (a TCP socket using port 23). This
connection makes SIS control of the switcher possible using a computer connected
to the same LAN or WAN. The SIS commands and behavior of the product
are identical to the commands and behavior the product exhibits when you are
communicating with it via a serial port.
Ethernet connection
The Ethernet cable can be terminated as a straight-through cable or a crossover
cable and must be properly terminated for your application (figure 4-3).
• Crossover cable — Direct connection between the switcher and a controlling
computer
• Patch (straight) cable — Connection of the switcher 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 4-3 — RJ-45 Ethernet connector pin assignments
Default IP addree
To access the Matrix 12800 switcher via the Ethernet port, you need the Matrix
IP Address, and may need the subnet mask and the gateway address. If the IP
address has been changed to an address comprised of words and characters, you
can determine the actual numeric IP address using the ping (ICMP) utility (see
appendix A, “Ethernet Connection”, for more details). If the addresses have not
been changed, the factory-specified defaults are:
• IPaddress 192.168.254.254 • Gatewayaddress 0.0.0.0
• Subnetmask 255.255.0.0