User`s manual

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AXIS 282/AXIS 282A - Glossary
to which a packet should be forwarded on its way to its
final destination. A router is often included as part of a
network switch (see below).
RTP- Real-Time Transfer Protocol. A transfer protocol
designed for the delivery of live content, e.g. MPEG-4.
Simplex -
In simplex operation, a network cable or
communications channel can only send information in
one direction; it's a “one-way street”.
SMTP -
Simple Mail Transfer Protocol is the protocol used
to send e-mail across the Internet. SMTP authentication is
a way of allowing people outside of a domain to use an
SMTP server when sending e-mail.
SNMP - Simple Network Management Protocol. An
application layer protocol that facilitates the exchange of
management information between network devices. It is
part of the Transmission Control Protocol/Internet
Protocol (TCP/IP) protocol suite.
Subnet Mask - An IP address consists of two components:
the network address and the host address. “Subnetting’
enables a network administrator to further divide the host
part of the address into two or more subnets. The subnet
mask identifies the subnet to which an IP address belongs.
Switch - Whilst a simple hub transmits all data to all
devices connected to it, a switch only transmits the data
to the device it is specifically intended for.
TCP/IP - Transmission Control Protocol/Internet Protocol.
A suite of network protocols that determine how data is
transmitted. TCP/IP is used on many networks, including
the Internet. TCP keeps track of the individual packets of
information and IP contains the rules for how the packets
are actually sent and received.
UDP - The User Datagram Protocol is a communications
protocol that offers a limited amount of service when
messages are exchanged between computers in a network
that uses the Internet Protocol (IP). UDP is an alternative
to the Transmission Control Protocol (TCP) and, together
with IP, is also known as UDP/IP.
Unicast - Communication between a single sender and a
single receiver over a network. A new connection is
established for each new user.
URL - Uniform Resource Locator. An “address" on the
network.
Varifocal - A varifocal lens provides a wide range of focal
lengths, as opposed to a lens with a fixed focal length,
which only provides one.
WAN - Wide-Area-Network. Similar to a LAN, but on a
larger geographical scale.
Web server - A program on a computer that delivers the
resources (usually web pages) requested by the web user
(the client).