Bosch Appliances VOT-320 manual Lan, Lun, Mac, Mib, MPEG-2, MPEG-4, Mss, Nfov, Ntp, Qcif, Qvga

108 en Glossary VOT-320

	L
LAN	See Local Area Network
Local Area Network	A communications network serving users within a limited geographical area such as a building
	or university campus. It is controlled by a network operating system and uses a transfer
	protocol.
LUN	Logical Unit Number; logical drive in iSCSI storage systems

	M
MAC	Media Access Control
MIB	Management Information Base; a collection of information for remote servicing using the
	SNMP protocol
MPEG-2	Improved video/audio compression standard, compression on highest level allows images in
	studio quality; now established as broadcast standard
MPEG-4	A further development of MPEG-2 designed for transmitting audiovisual data at very low
	transfer rates (for example over the Internet)
MSS	Maximum Segment Size; maximum byte figure for the user data in a data packet

	N
Net mask	A mask that explains which part of an IP address is the network address and which part is the
	host address. It is usually written in dotted decimal notation, for example "255.255.255.192."
NFOV	Narrow Field Of View, see FOV
NTP	Network Time Protocol; a standard for synchronizing computer system clocks via packet-
	based communication networks. NTP uses the connectionless network protocol UDP. This
	was developed specifically for enabling time to be reliably transmitted over networks with
	variable packet runtime (Ping).

	O
OF	Optical Fiber; now used predominantly as the transmission medium for line-borne
	telecommunication processes (glass fiber cable)
	P
P-frame	GOP image type predictive-coded picture; contains difference information from the preceding
	I- or P-frame
Parameters	Values used for configuration
	Q
QCIF	Quarter CIF, video format with 176 × 144/120 pixels
QP	Quantization Parameter; specifies the degree of compression in the H.264 protocol and thus
	the image quality for each stream. The lower the QP value, the higher the encoding quality.
QVGA	Quarter Video Graphics Array, video format with 320 × 240 pixels

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