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VOT-320
GBIC
GigaBit Interface Converter; applied in network technology to render interfaces flexible, for
converting an electrical interface into an optical interface, for example. This enables flexible
operation of an interface as a Gigabit Ethernet via twisted-pair cables or fiber optic cables.
GOP
Group of Pictures; group of consecutive frames in a video stream of images. A GOP always
begins with an I-frame, followed by one of more P-frames. B-frames and R-frames can also be
included.
H.264
Standard for high-efficiency video compression, based on the predecessors MPEG-1, MPEG-2
and MPEG-4. H.264 typically achieves a coding efficiency around three times as high as MPEG-
2. This means that comparable quality can be achieved at around a third of MPEG-2 data
quantity.
HTTP
Hypertext Transfer Protocol: protocol for transmitting data over a network
HTTPS
Hypertext Transfer Protocol Secure: encrypts and authenticates communication between Web
server and browser
I-frame
GOP image type intra-coded picture; reference picture that corresponds to a still image and is
independent of other types of images. Each GOP begins with this image type.
ICMP
Internet Control Message Protocol
ID
Identification: a machine readable character string
IEEE
Institute of Electrical and Electronics Engineers
IGMP
Internet Group Management Protocol
Internet Protocol
The main protocol used on the Internet, normally in conjunction with the Transfer Control
Protocol (TCP): TCP/IP
IP
See Internet Protocol
IP address
A 4-byte number uniquely defining each unit on the Internet. It is usually written in dotted
decimal notation, for example "209.130.2.193"
iSCSI
Storage over IP process for storage networks; specifies how storage protocols are operated
over IP
ISDN
Integrated Services Digital Network
JPEG
An encoding process for still images (Joint Photographic Experts Group)
kbps
Kilobits per second, the actual data rate
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Installation and Operating Manual
Glossary | en 107
DOC | V4.5 | 2010.09
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