Advanced call quality – Tandberg Data 7000 User Manual
Page 49
TANDBERG Videoconferencing System
49
Advanced use
Advanced call quality
NOTE
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).
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
TIP