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Video conferencing best practice

Video conferences advices
Log in 10 minutes before the start of the meeting.
Take care that all participants are well centered.
Be careful of lightening (try to avoid back lights).
Please mute your microphone when you do not speak.
  Please raise your hand when you want to speak.
Put your microphone optimally and speak in the same way as if your interlocutor was in the same room as you.
For personal video conference, use headphones to get a better result.