Extron Electronics FOX Matrix 14400 User Guide - Manual (Page 93)

You can turn off local echo by typing unset local_echo and then pressing at the
Telnet prompt. If you are connected to the FOX matrix switcher and need to access the
Telnet prompt to turn local echo off, type the Escape character (
< Ctrl > + < ] > ).
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 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 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
( < Ctrl > + < ] > ). At the Telnet prompt, type close, and then press .
Help
For Telnet command definitions, at the Telnet prompt, type ? and then press .
Quit
Exit the Telnet utility by typing quit and then pressing at the Telnet prompt. If you
are connected to the FOX matrix switcher, access the Telnet prompt by typing the Escape
character ( < Ctrl > + < ] > ).
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 the FOX matrix switcher and the mail server gateway. To understand
subnetting at the level required to install and operate the FOX matrix switcher, you must
understand the concepts of a gateway, local and remote devices, IP addresses and octets,
and subnet masks and octets.
Gateways
The FOX matrix switcher can communicate with the e-mail server that the switcher uses
for e-mail notification 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 and e-mail values in the matrix switcher (see
IP Settings/Options Window on
page 43 and Email Settings Page on page 66). When you are setting up the variables for
e-mail notification, which may include subnetting, the matrix switcher is the local device and
the e-mail server is the remote device.
FOX Matrix 320x and FOX Matrix 14400 • Ethernet Connection 87