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Glossary
DDNS (Dynamic DNS):
Is a service that converts IP addresses into host
names (a host name is a lot easier than trying to remember an IP ad-
dress). It also supports dynamic IP addresses, such as those assigned
by a DHCP server. This makes DDNS a good fit for home networks,
which normally receives an IP address from the ISP that will change
occasionally.
DHCP (Dynamic Host Configuration Protocol):
Uses an appropriate
server or router to enable dynamic assignment of an IP address to a
device connected to the network.
Display Resolution:
Is the number of pixels supported by your TV or VGA
monitor or the output signal of a viewing device, e.g. your DVR or NVR.
DNS Server:
Is a standard technology for managing public names of
web sites and other internet domains. DNS technology allows you to
type names into your web browser which your computer will automati-
cally find the address on the internet.
DST (Daylight Saving Time):
Is the period of the year when clocks are
moved one hour ahead.
DualStream:
A process where your DVR or NVR will record both Main-
stream and Substream video at the same time.
Format:
Is a command that prepares a storage device such as a USB
flash drive or hard drive to hold data.
Firmware:
The software that operates a discrete device (e.g. your
smartphone). It is referred to in this way rather than software as it is
integral to the operation of the device.
Frame Rate:
The measurement of the rate that pictures are displayed to
create a video feed. The unit of measurement is frames per second (fps).
Gateway:
Is a node or router that routes traffic from a device on your
home network to the outside network that is providing access to the
internet.
H.264+:
Mass video data requires increased storage capacity. To resolve
this issue, video compression technologies are used to reduce the data
while maintaining image quality. H.264+ is an innovative encoding tech-
nology aimed at surveillance video.
Hardware:
A physical device such as your DVR or NVR.
HDD (Hard Disk Drive):
Is a storage device located inside your DVR or
NVR. It is where all data is kept, saved and stored.
HTTP Port (Hypertext Transfer Protocol):
This port is used to log into
the web browser interface of your DVR or NVR (if available) using a web
client, such as Internet Explorer.
Hue:
Is somewhat synonymous to what is usually referred to as colors.
By altering the hue, you can change the color mix of the image.
IP Address:
The address of a device attached to the network. Each de-
vice on the network must use a unique address. IP addresses range
from 0.0.0.0 to 255.255.255.255.
Live View:
Is the default display mode for your DVR or NVR. Each cam-
era connected will be displayed on-screen.
MAC Address:
Is a unique identifier for network hardware. Can also be
used as a super password if you have forgotten your current password.
Mainstream:
Is the video stream that your DVR or NVR will display and
record.
Mask:
Is used to obscure part of your image for privacy. It can also be
used to minimise false triggers when your DVR or NVR detects motion.
Any area obscured won’t be shown live or recorded.