Can the server fail due to increased VOIP usage?

[Gyu7 1]

Six months ago, the server was shut down several times while doing large-scale content.

About 100 people were just running a marathon, but the server, which was fine until a few days ago, suddenly caused trouble that day.

My team made a lot of hypotheses, but I wasn't sure.

 

Among them, the most likely hypothesis is as follows

 

- More than 20 people tried to make a loud voice conversation at once. That's why the server was overloaded and shut down.

 

Is this possible?
I'd like to ask for your opinion.