RealPresence Collaboration Server (RMX) 1500/1800/2000/4000 Administrator’s Guide
Polycom®, Inc. 225
Muting Participants Except the Lecturer (AVC CP Only)
When the Mute Participants Except Lecturer option in the Conference Profile is enabled, the audio of all
participants in the conference except for the lecturer can be automatically muted upon connection to the
conference. This prevents other conference participants from accidentally interrupting the lecture, or from a
noisy participant affecting the audio quality of the entire conference. Muted participants cannot unmute
themselves unless they are unmuted from the Collaboration Server Web Client/RMX Manager.
Guidelines for Muting all the Participants Except the Lecturer
● Both administrators and operators (users) are allowed to set the Mute Participants Except Lecturer
option.
● When the Mute Participants Except Lecturer option is enabled, the mute indicator on the participant
endpoints are not visible because the mute participants was initiated by the MCU. Therefore, it is
recommended to inform the participants that their audio is muted by using the Message Overlay
functions.
● When the Mute Participants Except Lecturer option is enabled in the Conference Profile settings, all
conferences to which this profile is assigned will start with this option enabled. All participants, except
for the designated lecturer, are muted.
● The Mute Participants Except Lecturer option can be enabled or disabled at any time after the start
of the conference. When enabled, it allows all the conference participants to converse before the
lecturer joins the conference or before they are muted. When disabled, it unmutes all the participants
in the conference.
● If the endpoint of the designated lecturer is muted when the lecturer connects to the conference, the
lecturer remains muted until the endpoint has been unmuted.
● When you replace a lecturer, the MCU automatically mutes the previous lecturer and unmutes the
new lecturer.
● When you disconnect a lecturer from the conference or the lecturer leaves the conference, all
participants remain muted but are able to view participants in regular video layout until the you disable
the Mute Participants Except Lecturer option.
● A participant can override the Mute Participants Except Lecturer option by activating the Mute All
Except Me option using the appropriate DTMF code, provided the participant has authorization for
this operation in the IVR Services properties. The lecturer audio is muted and the participant audio is
unmuted. You can reactivate the Mute Participants Except Lecturer option after a participant has
previously activated the Mute All Except Me option. The participant is muted and the lecturer, if
designated, is unmuted.
● In cascaded conferences, all participants (including the link participants) except the lecturer are
muted. Only the lecturer is not muted.