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AXIS 210/211 - Glossary of Terms
switch (see below).
RTP- Real-Time Transfer Protocol. A transfer protocol
designed for delivery of live contents, e.g. MPEG-4.
Simplex - In simplex operation, a network cable or
communications channel can only send information in one
direction.
SMTP - A common e-mail protocol.
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.
Unicast - Communication between a single sender and a
single receiver over a network. A new connection is
established for each new user.
UPnP™ - An “address" on the network. UPnP is an
architecture for peer-to-peer network connectivity of
intelligent appliances, wireless devices, and PCs.
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 (server) providing
the resources (e.g. web pages) requested by the user (client).