Polycom 2000 User Manual

For conferences with more participants than display squares, the RMX 

dynamic video mix capability allows the viewed sites to be modified 

throughout the conference. The displayed layout can be changed during 

an ongoing conference, allowing a participant to view different screen 

layouts of the other conference participants. These layout options allow 

conferences to have greater flexibility when displaying a large number of 

participants and maximizes the screen’s effectiveness.

In Video Switching mode all participants see the same video picture (full 

screen) and use only one CIF video resource for each connection. The 

current speaker is displayed in full screen on all the participants' 

endpoints, while the speaker sees the previous speaker. Switching 

between participants is voice-activated; whenever a participant starts to 

speak, he or she becomes the conference speaker and is viewed on all 

screens. All conference participants must use the same line rate and video 

parameters such as video protocol, frame rate, annexes and interlaced 

video mode as no video processing is performed. 
High Definition Video Switching is an ultra-high quality video resolution 

enabling compliant endpoints to connect to conferences at resolutions 

of 1280x720 pixels (720p) and at line rates ranging from 384kbp to 4Mbps 

(with MPM) and 1920 x 1080 pixels (1080p) at line rates ranging from 

384kbp to 6Mbps (with MPM+).
HD Video Switching uses less system resources. The maximum 

conference size is 80 video participants.

Video quality in Continuous Presence mode is affected by the conference 

line rate (that determines the maximum line rate to be used by the 

connecting endpoints), and the video capabilities of the endpoints such as 

the video protocol, video resolution and frame rate. 
The video protocol selected by the system determines the video 

compression standard used by the endpoints. In Continuous Presence 

conferences, the system selects the best video protocol for the endpoint 

according to its capabilities.