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Advanced Use
Advanced call quality
THE SELECTIONS MADE IN THIS MENU WILL OVERRIDE THE SELECTIONS MADE IN THE ‘CALL QUALITY’ MENU.
IF ‘AUTO’ IS SELECTED, THE SETTINGS IN ‘CALL QUALITY’ 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
RESOLUTION, AUTO FUNCTIONALITY
(IF SUPPORTED BY FAR END):
WHEN ‘VIDEO: MOTION’ :
LOW BANDWIDTHS: CIF, SIF
HIGH BANDWIDTHS: ICIF,ISIF
WHEN ‘VIDEO: SHARPNESS’ :
4CIF, 4SIF, VGA, SVGA