Telnet is a terminal emulation program that allows users to connect their PC to servers on TCP/IP networks like the Internet. Routers determine the next network point to forward packets towards their destination in packet-switched networks. Network Virtual Terminal (NVT) refers to both the virtual terminal environment used in early TCP/IP networks and Novell Virtual Terminal. The NVT printer specification defines its printing capabilities.

1. How Telnet Works
Telnet
Router
NVT
NVT Printer

2. Telnet
● A terminal emulation
program for TCP/IP
networks such as the
Internet. The Telnet
program runs on your
computer and
connects your PC to a
server on the network.

3. Router
● In packet-switched
networks such as the
Internet, a router is a
device or, in some
cases, software in a
computer, that
determines the next
network point to which
a packet should be
forwarded toward its
destination.

4. NVT
There may be many popular
meanings for NVT with the
most popular definition
being that of Network Virtual
Terminal, Novell Virtual
Terminal
Network Virtual Terminal is
not the only word formed
from NVT. There is one
more listed below.
NVT is also derived from
Novell Virtual Terminal

5. NVT Printer
● The NVT printer has an
unspecified carriage width
and page length and can
produce representations of
all 95 USASCII graphics
(codes 32 through 126). Of
the 33 USASCII control
codes (0 through 31 and
127), and the 128 uncovered
codes (128 through 255),
the following have specified
meaning to the NVT printer

6. References
http://image-search.yahoo.co.jp/search?p=What+tel
http://www.webopedia.com/TERM/T/Telnet.html
http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci2129
http://www.auditmypc.com/acronym/NVT.asp
http://www.freesoft.org/CIE/RFC/854/6.htm