If only one user has this problem, first of all, try to mute this User; otherwise, this User will keep the entire meeting room noisy.
Then suggest this User do the following,
If all users or most of the users have this voice problem, you need to contact tech support since the server probably has some connection issues or server overload.
Usually, .this problem is caused by one of the users, or some of the users have a noisy background.
You can easily find this User from the left and top side of the panel, where it will flash the user icon when someone talks.
The best practice is to mute all users except the host or presenter. Or you can lock the User to use a microphone and only give permission when you need this User to talk,
If one User suddenly dropped, first make sure this User didn´t logout of the meeting by himself.
If not then the possible reason is this User´s connection is dropped.
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