Glossary
H264: H.264/MPEG-4 Part 10 or AVC (Advanced Video Coding) is a standard
for video compression, and is currently one of the most commonly used formats
for the recording, compression, and distribution of high definition video.
NVR: A network video recorder (NVR) is a software program that records video
in a digital format to a disk drive, USB flash drive, SD memory card or other
mass storage device. An NVR contains no dedicated video capture hardware.
PPPOE: The Point-to-Point Protocol over Ethernet (PPPoE) is a network
protocol for encapsulating PPP frames inside Ethernet frames.
NTP: Network Time Protocol (NTP) is a networking protocol for clock
synchronization between computer systems over packet-switched, variable-
latency data networks.
DDNS: Dynamic DNS (DDNS) is a method of automatically updating a name
server in the Domain Name System (DNS), often in real time, with the active
DNS configuration of its configured hostnames, addresses or other information.
DHCP: Dynamic Host Configuration Protocol. A system by which each piece
of equipment on a network is allocated an address IP dynamically.
Ethernet: The most widely used local area network (LAN) access method,
defined by the IEEE as the 802.3 standard.
FTP: File Transfer Protocol. A standard protocol designed for transferring files
over a TCP/IP net-work.
IP: Internet Protocol. The network layer protocol in the TCP/IP communications
protocol suite (the “IP” in TCP/IP). IP contains a network address and allows
messages to be routed to a different network or subnet.
LED: Light Emitting Diode. A semiconductor device that emits light when a
voltage is applied.
Motion detection: Camera function that causes an alert to be triggered when
movement is detected in the field of view.
Protocol: Standards governing the transmission and reception of data.
Resolution: Screen resolution is expressed as a matrix of dots. For example, the
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