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User’s Guide for Polycom HDX Systems and the Polycom Touch Control
28 Polycom, Inc.
Using Chair Control for Multipoint Calls
During some multipoint calls, you can use chair control to manage the video.
In this type of call, the chair controller can choose the site whose video is sent
to other sites in the conference. The chair controller can also disconnect a site
or end the conference. Any participant can choose to view a specific site,
request to be the broadcaster, or request to be chair controller.
Only one site at a time can be the chair controller. Before a site can become the
controller, the site with control must give up control.
The type of host for the multipoint call and the systems in the call determine
whether chair control is available.
Discussion Multiple sites are displayed in continuous presence.
The current speaker’s image is highlighted.
Presentation The speaker sees continuous presence while the other
sites see the speaker in full screen on the monitor.
Full Screen The site that is speaking is shown in full screen to all
other sites. The current speaker sees the previous
speaker.
Setting Description
Hosted by... Allows chair control if...
Video Conferencing
System
The call includes:
• Polycom HDX systems, ViewStation® EX, ViewStation
FX, VSX®, and VS4000™ systems connected by IP
H.323, ISDN H.320, or both
• Other systems connected by ISDN H.320 only
Bridge Allowed by the bridge