TANDBERG D50104-15 用户手册

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页码 106
Health Care System III
57
Advanced Use
Advanced call quality
T
HE
 
SELECTIONS
 
MADE
 
IN
 
THIS
 
MENU
 
WILL
 
OVERRIDE
 
THE
 
SELECTIONS
 
MADE
 
IN
 
THE
 ‘C
ALL
 Q
UALITY
’ 
MENU
.
I
F
 ‘A
UTO
’ 
IS
 
SELECTED
THE
 
SETTINGS
 
IN
 ‘C
ALL
 Q
UALITY
’ 
WILL
 
BE
 
USED
.
Audio
Auto
The setting of ‘Audio: Auto/High/Normal’ in ‘Call Quality’ will be used.
G.722.1
Compressed high quality audio (7 kHz).
G.722
High quality audio (7 kHz).
G.728
Compressed normal quality audio (telephone quality, 3.1 kHz).
G.711
Normal quality audio (telephone quality, 3.1 kHz).
Off
No audio is transmitted.
Video
Auto
Optimized video quality depending on
available bandwidth.
H.263
Bandwidth efficient video compression
and decompression.
H.261
Normal video compression and decompression.
Off
No video is transmitted.
Resolution
Auto
The setting of ‘Video: Auto/Motion/Sharpness’ in ‘Call Quality’ will be used, see
tip above.
4CIF *
Digital Clarity (704 x 576 pixels), only for H263.
iCIF
Natural Video (352 x 576 pixels for PAL, 352x480 pixels for NTSC), only for H263.
CIF
High resolution video (352 x 288 pixels).
QCIF
Low resolution video (176 x 144 pixels)
H.331
Off
Standard two-way communication with quality negotiation between both sides.
On
Used when broadcasting a video conference from one site to many others, e.g. via
satellite, where there is no possibility to negotiate quality between the receivers
and the originator due to one-way communication.
Status Format
Provides call quality feedback on the status line.
Auto
Video off/on, Audio off/normal/high
Advanced
Shows video/audio standards (Example: Video: H261 CIF, Audio: G722).
* - Requires option ‘Presenter’. To check which options are installed, see the ‘System Info’ menu in ‘Diagnostics’.
NOTE
TIP
R
ESOLUTION
, A
UTO
 
FUNCTIONALITY
(
IF
 
SUPPORTED
 
BY
 
FAR
 
END
):
W
HEN
 ‘V
IDEO
: M
OTION
’ :
L
OW
 
BANDWIDTHS
: CIF, SIF
H
IGH
 
BANDWIDTHS
I
CIF,
I
SIF
W
HEN
 ‘V
IDEO
: S
HARPNESS
’ :
4CIF, 4SIF, VGA, SVGA