[smashface]

I assume the author meant that since those teams will be speaking a lot to people as part of their daily work they add a lot of ambient noise to a workplace. That could matter to some people in open office plans or cube farms where you can't separate yourself from that noise.

[viraptor]

That's it. "Is the office loud" is subjective. "Is there a team handling calls a few metres away" has a simple objective answer... usually.