TANDBERG Videoconferencing System

Advanced use

Advanced call quality

NOTE

THE ‘AUTOSETTINGS ARE RECOMMENDED CHOICES FOR MOST CASES. THE OTHER AUDIO, VIDEO AND RESOLUTION SELECTIONS MADE IN THIS MENU WILL OVERRIDE THE SELECTIONS MADE IN THE ‘CALL QUALITYMENU AND ARE NOT RECOMMENDED TO BE CHANGED FOR NORMAL USE.

Audio

The setting of ‘Audio: Auto/High/Normal’ in ‘Call Quality’ will be used.

 

Auto

 

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.

 

 

 

 

 

 

 

RESOLUTION, AUTO FUNCTIONALITY

 

 

 

TIP

 

Video

 

 

 

 

(IF SUPPORTED BY FAR END):

 

 

 

 

WHEN VIDEO: MOTION’ :

Auto

Optimized video quality depending on available bandwidth.

LOW BANDWIDTHS: CIF, SIF

H.264**

Bandwidth efficient video compression and decompression.

HIGH BANDWIDTHS: ICIF,ISIF

H.263

Normal video compression and decompression.

WHEN VIDEO: SHARPNESS’ :

H.261

Legacy video compression and decompression.

4CIF, 4SIF, VGA, SVGA, XGA

Off

No video is transmitted.

 

 

 

 

 

 

 

 

Resolution

The setting of ‘Video: Auto/Motion/Sharpness’ in ‘Call Quality’ will be used, see tip above.

Auto

4CIF

Digital Clarity (704 x 576 pixels), 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).

 

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TANDBERG 7000 user manual Advanced call quality