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Video switching, Video switching -6 – Polycom RMX DOC2560B User Manual

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Chapter 1-System Overview

1-6

Additional video layouts have been created to give Telepresence operators

more video layout options when configuring TPX room systems. These

additional video layout options are available for selection when

Telepresence is selected in the conference profile.
Multiple Switching Modes
If the number of participants is higher than the number of video windows

in the selected layout, switching between video participants can be

performed in one of these modes:

Voice activation

RMX user forces participants to selected video window

Lecture Mode - The lecturer is viewed in full screen by all conference

participants, while the audience is “time-switched” in the speaker’s

view

Presentation Mode - When the speaker’s presentation extends beyond

a predefined time, he/she becomes the current lecturer and the
conference switches to Lecture Mode

Video Switching

In Video Switching (VSW) mode all participants see the same video

picture (full screen). Only one CIF video resource is used for each

connection.
VSW mode conferencing is defined by:

Conference Line Rate setting in the conference profile

All endpoints must connect to the conference at the same Line

Rate. Line rates range from 192kbps to 6Mb (8Mb with MPMx).

The RMX will always connect participants at the highest possible

video quality the is supported by the conference Line Rate.

Endpoint capabilities

Compliant endpoints can connect to conferences at resolutions of

up to 1920 x 1080 pixels (1080p).

The video quality for the conference is determined by the Highest Common

Mechanism and is based on the endpoint with the lowest capabilities that

is connected to the conference. The Highest Common Mechanism enables

the system to dynamically select the best video quality as endpoints

connect to and disconnect from the conference.