Configuring and Managing MPE/iX Internet Services (MPE/iX 6.0)

188 Glossary
Glossary
TCP/IP and AFCP to allow
incoming calls from the Internet
Services environment to HP 3000
systems.
Telnet The application protocol
offering virtual terminal service
in the Internet suite of protocols
developed by the Advanced
Research Projects Agency
(ARPA).
TELNET.ARPA.SYS A file that
contains the Telnet client
program.
TELNTDOC.ARPA.SYS The
readme file for the Telnet client
program.
TFTP Trivial File Transfer
Protocol, TFTP, a set of rules used
to read and write files to or from a
remote system.
U
UDP User Datagram Protocol, a
set of rules used to send
connectionless messages called
datagrams between systems.
UDP requires much less overhead
than a protocol such as TCP
because it does not require
acknowledgement from the
recipient that the message
reached its destination.
V
Virtual Terminal A network
service that allows a user to
establish interactive sessions on a
node.
W
WAN Wide Area Network. A
data communications network of
unlimited size, used for
connecting localities, cities, and
countries.
well-known address The port
number that identifies the
specific user process of an
available and commonly-used
Internet Service. For example, the
port number for the File Transfer
Protocol (FTP) is 21.
X
X.25 Defines the interface
between a DTE and a DCE for
packet mode operation on a public
data network (PDN).