Extron Electronics MPX 866 A User Guide - Manual (Page 123)

Set carriage return-line feed
Unless commanded otherwise, Telnet transmits a line feed character only (no carriage return)
to the connected switcher when you press the <
Enter > key. This is the correct setting
for SIS communication with the switcher. The Telnet set crlf command forces Telnet to
transmit carriage return and line feed characters when < Enter > is pressed, but if crlf is set,
the SIS link with the switcher does not function properly.
Close
To close the link to the switcher, access the Telnet prompt by typing the Escape character
(
+ <]> ). At the Telnet prompt, type close, and then press < Enter >.
Help
For Telnet command definitions, at the Telnet prompt, type ? and then press < Enter >.
Quit
Exit the Telnet utility by typing quit and then pressing < Enter > at the Telnet prompt. If you
are connected to the MPX 866 A matrix switcher, access the Telnet prompt by typing the
Escape character (
+ <]> ).
Subnetting — A Primer
It is not the purpose of this guide to describe TCP/IP protocol in detail. However, some
understanding of TCP/IP subnetting (a subnet is a subset of a network — a set of IP devices
that have portions of their IP addresses in common) is necessary in order to understand the
interaction of and another server gateway. To understand subnetting at the level required to
install and operate the switcher, you must understand the concepts of a gateway, local and
remote devices, IP addresses and octets, and subnet masks and octets.
Gateways
The MPX 866 A switcher can communicate with the a controlling computer directly (if they
are on the same subnet) or the communication can be routed via a gateway (a computer
that provides a link between different subnets).
Local and Remote Devices
The local and remote devices are defined from the point of view of the function being
described. In this guide, subnetting is an issue when you are using the controlling PC to set
TCP/IP values in the switcher (see “
IP Settings/Options window “ in the Matrix Software
section). When you are setting up the variables that may include subnetting, the matrix
switcher is the local device and the remote server is the remote device.
IP Addresses and Octets
Valid IP addresses consist of four 1-, 2-, or 3-digit numeric subfields, properly called “octets,”
separated by dots (periods) (see figure 73). Each octet can be numbered from 000 through
255. Leading zeroes, up to three digits total per octet, are optional. Values of 256 and above
are invalid.
192.168.254.254 Typical IP Address:
Octets
Figure 73. Typical IP Address
MPX 866 A Media Presentation Matrix Switcher • Ethernet Connection 118