Alphabetical Reference
229
G.729
Audio protocol for compressed voice transmission. The quality is worse
than in ! G.711 and better than in ! G.723. Uses a bandwidth of about 8
kbit/s.
Gateway
Mediation components between two different network types, e.g., ! IP
network and ISDN network.
HTTP
Abbreviation for "Hypertext Transfer Protocol".
Protocol for the transfer of data in ! IP networks.
IP
Abbreviation for "Internet Protokoll".
IP address
Also called "! IP" in short. The unique address of a terminal device in the
network. It consists of four number blocks of 0 to 255 each, separated by
a point. To simplify the notation, voice names can be released from a
! DNS into the IP addresses.
Jitter
Runtime fluctuations in data transmission in ! IP networks.
LAN
Abbreviation for "Local Area Network".
Layer 2
2
nd
layer (Data Link Layer) of the 7-layer OSI model for describing data
transmission interfaces.
Layer 3
3
rd
layer (Network Layer) of the 7-layer OSI model for describing the data
transmission interfaces.
LCD
Abbreviation for "
L
iquid
C
rystal
D
isplay".
Display of numbers, text or graphics with the help of liquid crystal technology.