Hughes DIRECWAY DW4020 - Manual (Page 75)

• Glossary
1031484-0001 Revision 2
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Glossary
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Dotted decimal notation - An IP address
consists of 32 bits. Rather than working with 32
bits at a time, it is a common practice to segment
the 32 bits of an IP address into four 8-bit fields
called octets. Each octet is converted to a
decimal number (the Base 10 numbering
system) in the range 0-255 and separated by a
period (a dot).
Dynamic Host Configuration Protocol (DHCP) -
a communications protocol that lets network
administrators manage centrally and automate
the assignment of Internet Protocol (IP)
addresses in an organization's network.
.
Enterprise - an entity autonomously operating a
network using TCP/IP and in particular
determining the addressing plan and address
assignments within that network.
Gateway - the receive modem, the transmit
modem, and the Gateway host when cabled
together form the Gateway. Also called the
DW4020.
Gateway host - downloads code to the IRU,
performs PEP and decompression functions, and
monitors and controls the operation of the
IRU/ITU. In addition, the Gateway host
supports configuration, status monitoring, and
commissioning using a "dumb terminal"
connected to an asynchronous serial port.
Host - In packet- and message-switching
communications networks, the collection of
hardware and software that makes use of packet
or message switching to support user-to-user,
i.e., end-to-end, communications, interprocess
communications, and distributed data
processing. More simply, any computer that has
full two-way access to other computers on the
Internet.
Internet Assigned Numbers Authority (IANA) -
the organization that has overseen the allocation
of Internet Protocol addresses to Internet service
providers (ISPs).
Internet protocol (IP) - The method or protocol
by which data is sent from one computer to
another on the Internet. Each computer (known
as a host) on the Internet has at least one IP
address that uniquely identifies it from all other
computers on the Internet. The protocol within
TCP/IP that governs the breakup of data
messages into packets, routing the packets from
sender to destination network and station, and
reassembling the packets into the original data
messages at the destination.
Internet service provider (ISP) - A business that
supplies Internet connectivity services to
individuals, businesses, and organizations.
Some ISPs are large national or multinational
corporations that offer access in many locations,
while others are limited to a single city or
region.