Alphabetical Reference
228
Abbreviations and Specialized Terms
You will find more information in the relevant literature on the Network
Technology and ! VoIP.
DHCP
Abbreviation for "Dynamic Host Configuration Protocol".
The DHCP is an Ethernet protocol that allows for the automatic configura-
tion of IP based endpoints. Additional information see ! page 38.
DNS
Abbreviation for "Domain Name System".
Additional information see ! page 41.
DTMF
Abbreviation for "Dual Tone Multi Frequence".
DLS
The Deployment and Licensing Server (DLS) is a HiPath Management ap-
plication that provides an integrated solution for the customers and the
service personal to administer workpoints (that are optiClients and opti-
Point devices) in HiPath- and non-HiPath networks
EAP
Extensible Authentication Protocol
FTP
Abbreviation for "File Transfer Protocol".
Is used for transferring files in networks, e.g., to update telephone soft-
ware (! Download Application).
G.711
Audio protocol for uncompressed voice transmission. Requires a band-
width of 64 kbit/s.
G.722
The G.722 recommendation describes ADPCM coding with a sub-band.
The bandwidth for the sub-band is 7 kHz at a sampling rate of 16 kHz. The
transfer rate is 64 kbps, voice quality has a MOS rating of 4.5 which is quite
high.
G.723
Audio protocol for compressed voice transmission. The quality is worse
than in ! G.711 and ! G.729. Requires a bandwidth of about 6 kbit/s.
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