TANDBERG MSE 8510, MCU 4500 manual user interface, See Content channel video support for additional

Displays a sample still video capture of the	Click the picture to update it.
participant.
	Note that conferences that are configured to
	require encryption do not show previews. Also
	note that previews can be disabled on the
	page (refer to Customizing the
	user interface).
	See Content channel video support for additional
	information on H.239 and BFCP.
These controls are only available if the conference
is configured with content enabled, and if the
participant is contributing a main video channel.
This control causes the MCU to
attempt to use the participant's main
video channel as the conference's
content channel source. This will not
be possible if the conference already
has an active content channel source
(either an endpoint's content video
channel or another participant's main
video activated via this control).
This control causes the MCU to stop
attempting to use the participant's
main video channel as the conference's
content channel source. It is necessary
to use this control to switch to using a
different endpoint's primary video
channel or to enable content video
contribution from endpoints.

Although you may use the controls described above to manage one participant at a time, for example to mute that participant's audio, or to make them important, you may wish to manage all participants at once. The all-participantcontrols permit you to do this. Note that you may continue to use the per-participant controls in conjunction with the all-participant controls. Refer to the table below for details of the controls available:

Makes all participants unimportant	If no participants are currently important, then
	this control will be unavailable.
This stops all audio in the conference	If no participants are currently muted, the stop
(mute).	muting controls will be unavailable. If all
Allows all participants to hear the	participants are currently muted, the mute
	controls will be unavailable.

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