Yealink T48G-SKYPE FOR BUSINESS EDITION User Manual page 193

Tap to demote a presenter to an attendee (
2.
To promote a conference participant:
Tap .
1.
Tap to promote an attendee to a presenter (
2.
Enabling or Disabling the Announcement
Only the organizer and presenters can enable or disable the announcement. When the
announcement feature is enabled, the phone will issue a voice message to announce that a
participant joins or leaves the conference.
Basic Call Features
).
).
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