Extron Electronics JMP 9600 User Guide - Manual (Page 115)

Set carriage return-line feed
Unless commanded otherwise, Telnet transmits a line feed character only (no carriage
return) to the connected player when you press the <Enter> key. This is the correct
setting for MSVPP communication with the player. 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 MSVPP link with the player does not function properly.
Close
To close the link to the player, access the Telnet prompt by typing the Escape character
(
< Ctrl > + < ] > ). 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 media player, access the Telnet prompt by typing the Escape
character (
< Ctrl > + < ] > ).
Subnetting — A Primer
It is not the purpose of this manual to describe TCP/IP protocol in detail. However, some
understanding of TCP/IP subnetting (a netmask defines 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 media player and the mail server gateway. To understand
subnetting at the level required to install and operate the media player, you must understand
the concepts of a gateway, local and remote devices, IP addresses and octets, and netmask
masks and octets.
Gateways
The media player can communicate with directly with other devices (if they are on the same
subnet [netmask]) or the communication can be routed via a gateway (a device 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. The media player is the local device and the other unit 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) (figure 85). 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 85. Typical IP Address
JMP 9600 Media Player • Ethernet Connection 109