TANDBERG 1700 MXP User Manual - page 87
D13954.01
MAY2006
87
TANDBERG 1700
MXP
USER GUIDE
Audio Algorithm
Control Panel > Call Quality Settings
CANCEL
Selectthisiconandpress
OK
toleavethemenuundoingany
changes.
RESTORE DEFAULTS
Selectthisiconandpress
OK
torestorethedefaultsettings.
SAVE
Selectthisiconandpress
OK
toleavethemenuputting
changesintoeffect.
AUDIO ALGORITHM
Thesystemwillautomaticallyselectthebestaudioalgorithmbasedonthecallrateand
thecapabilitiesoftheremotesystem.Usethismenutodisableaudioalgorithmsincase
youwanttoremove“lowquality”audio,orifyouhaveinteroperabilityissuescallingother
systems.
G.711
Normalqualityaudio(telephonequality3.1kHzat64kbps).Thisaudioalgorithmismanda-
toryforvideoconferencingequipmentandisimpossibletouncheck.
G.728
Compressednormalqualityaudio(telephonequality,3.1kHzat16kbps)
G.722
Highqualityaudio(7kHzat48kbps,56kbpsor64kbps)
AACLD
CD-qualityaudio,MPEG-4AdvancedAudioCodingLowDelay(20kHz,stereoat128kbps,
monoat64kbps).
G.722.1
Compressedhighqualityaudio(7kHzat24kbps,32kbpsand48kbps).
CALL RATE VS AUDIO ALGORITHMS SELECTED
Modify/removealgorithmsusedbyuncheckingthedifferentaudioalgorithms.
Automatically preferred audio algorithms on
call rates up to and including 12kbps
1.G.722.1(24kbpsor32kbps)
2.G.728(16kbps)
3.AAC-LD(64kbpsor56kbps)
4.G.722(56kbps,64kbpsor48kbps)*
5.G.711(64kbps,56kbpsor48kbps)**
6.AAC-LD(48kbpsor128kbps)
Automatically preferred audio algorithms on
call rates above 12kbps
1.AAC-LD(128kbps)***
2.AAC-LD(64kbpsor56kbps)
3.G.722(64kbps,56kbpsor48kbps)*
4.G.722.1(32kbpsor24kbps)
5.G.728(16kbps)
6.G.711(64kbps,56kbps,48kbps)**
7.AAC-LD(48kbpsor128kbps)
*G.722at64kbpsisusedinH.323(IP)callsonly.
**G.711at64kbpsisusedinSIPandH.323(IP)callsonly.
***DependentonacallrateabovetheAAC-LD128threshold.
NotethatthisisnotavailableonallTANDBERGsystems.