[niemenmaa]

My work consists of ~30% of meetings and ~5% of phone calls. We have a rule with my "roommates" that short calls (< 30 min) can be made without leaving the room. Luckily for me these are mostly internal (and non-confidential) ones.

If it is a customer meeting, then I go to a phone booth that has a standing desk, and for longer ones I book a meeting room where the setup is little bit better.

In previous co-working space was this big hall and distance between tables was something like 5 to 10 meters (15-30 ft.) and almost everyone made their calls on their desks, even though phone booths and meeting rooms were available.

One's mileage may of course greatly vary :)