Alphabetical Reference Abbreviations and Specialized Terms
84
G.723
Audio protocol for compressed voice transmission. The quality is worse
than in Æ G.711 and Æ G.729. Requires a bandwidth of about 6 kbit/s.
G.729
Audio protocol for compressed voice transmission. The quality is worse
than in Æ G.711 and better than in Æ G.723. Uses a bandwidth of about 8
kbit/s.
Gateway
Mediation components between two different network types, e.g., Æ IP
network and ISDN network.
HFA
Abbreviation for "Hicom Feature Access".
Sets up the connection between Æ IP telephony and a Æ PBX with the
help of a gateway (e.g., HG 1500 or HG 3530) .
HTTP
Abbreviation for "Hypertext Transfer Protocol".
Protocol for the transfer of data in Æ IP networks.
IP
Abbreviation for "Internet Protokoll".
IP address
Also called "Æ 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
Æ DNS into the IP addresses.
Jitter
Runtime fluctuations in data transmission in Æ 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.
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