$80$6)0ROAND$80($-)3ERIESs2EFERENCE)NFORMATION
131
131
Setting carriage return-line feed
5NLESSCOMMANDEDOTHERWISE4ELNETTRANSMITSALINEFEEDCHARACTERONLYNOCARRIAGE
RETURN TOTHECONNECTEDSWITCHERWHENYOUPRESSTHE%NTERKEY4HISISTHECORRECT
setting for SIS communication with the switcher. The Telnet
set
crlf
command forces
4ELNETTOTRANSMITCARRIAGERETURNANDLINEFEEDCHARACTERSWHEN%NTERISPRESSED
however, if
crlf
is set, the SIS link with the switcher does not function properly.
Closing the link to the switcher
To close the link to the switcher, access the
Telnet
prompt by entering the escape
sequence (<Ctrl +
=
>
). At the
Telnet
prompt, enter
close
.
Help
For Telnet command definitions, enter
?
at the Telnet prompt.
Exiting Telnet (Quit command)
%XITTHE4ELNETUTILITYBYENTERING
quit
at the Telnet prompt. If you are connected to the
$80SWITCHERACCESSTHE4ELNETPROMPTBYENTERINGTHE%SCAPESEQUENCE#TRL
=
Subnetting, a Primer
A subnet is a
sub
set of a
net
work — a set of IP devices that have portions of their IP
addresses in common. It is not the purpose of this manual to describe TCP/IP protocol
INDETAIL(OWEVERSOMEUNDERSTANDINGOF4#0)0SUBNETTINGISNECESSARYINORDER
to understand the interaction of the DXP switcher and the mail server gateway. To
understand subnetting at the level required to install and operate the DXP switcher, you
must understand the concepts of a gateway, local and remote devices, IP addresses and
octets, and subnet masks and octets.
Gateways
The DXP switcher can communicate with the e-mail server that it 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
computer to set TCP/IP and e-mail values in the DXP switcher (see “
IP Setup
”
on page 77
and “
Email Settings Page
vONPAGE 7HENYOUARESETTINGUPTHEVARIABLESFOR
e-mail notification, the matrix switcher is the local device and the e-mail server is the
remote device.
IP addresses and octets
6ALID)0ADDRESSESCONSISTOFFOURORDIGITNUMERICSUBlELDSCALLEDhOCTETSv
which are separated by dots (periods) (figure
119
%ACHOCTETCANBENUMBEREDFROM
THROUGH,EADINGZEROSUPTOTHREEDIGITSTOTALPEROCTETAREOPTIONAL6ALUESOF
and above are invalid.
192.168.254.254
Typical IP Address:
Octets
Figure 119.
IP Address and Octets