Appendix A - Glossary - ABB SM1000 User Manual

Videographic Recorders
SM1000 and SM2000
Appendix A – Glossary
The following terms have specific meanings within the Ethernet
environment:
10BaseT
A definition of the cable type and transmission rate of the
network. The '10' represents a transmission rate of
10Mbps and the 'T' for unshielded twisted pair cable.
100BaseT
A higher speed version of 10BaseT with a transmission
rate of 100Mbps.
ARP
Address Resolution Protocol. Converts between IP
addresses and MAC (hardware) addresses on the
network.
Default gateway
The IP address of the gateway (router, switch etc.) that is
used to communicate with other networks.
FTP
File Transfer Protocol. A TCP/IP suite application that
provides an efficient and reliable means of transferring
files between a remote server and a client.
HTTP
HyperText Transfer Protocol. Used for the transfer of web
pages.
ICMP
Internet Control Message Protocol. An Internet protocol
sent in response to errors in TCP/IP messages. It is an
error reporting protocol between a host and a gateway.
IP address
Internet Protocol address. This is the unique address
given to each computer on a TCP/IP network (including
the Internet).
LAN
Local Area Network. A group of computers and
associated devices
communications line or wireless link and, typically, the
resources of a single processor or server within a small
geographic area (for example, within an office building).
Usually, the server has applications and data storage that
are shared in common by multiple computer users. A
LAN may serve as few as two or three users (e.g., in a
home network) or as many as thousands of users (e.g.,
in a large office).
IM/SMENET Issue 4
that share a common
MAC address
Media Access Control address, also called the hardware
or physical address. This is a unique address given to
each Ethernet interface that is used in an Ethernet
packet to identify the source and destination of the data
being sent.
Open system
A system conforming to specifications and guidelines
that are 'open' to all. This allows any manufacturers'
equipment that comply with these standards to be used
interchangeably on the standard network.
Router
Links a local network to a remote network. For example,
your company's network probably uses a router to
connect to the Internet. Can be used to connect a LAN
to a LAN, a WAN to a WAN, or a LAN to the Internet.
Subnet mask (or Sub-Network Mask)
A mask used to determine what subnet an IP address
belongs to (an IP address has two components, the
network address and the host address).
TCP/IP
Transmission Control Protocol/Internet Protocol. The
language all computers on the Internet, LANs and WANs
use to communicate with each other.
UTP
Unshielded Twisted Pair. The type of wire that is used in
10BaseT Ethernet communications.
WAN
Wide Area Network. A geographically dispersed
telecommunications network. The term distinguishes a
broader telecommunication structure from a local area
network (LAN). A WAN may be privately owned or
rented, but the term usually implies the inclusion of public
(shared user) networks.
Appendix A – Glossary
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