I'm in IT. In the beginning I didn't deal with it too well. I am in a cubicle setting and I used to go out of the room and outside to make any work calls because I was afraid to make calls in front of everyone. I dreaded group talking situations. 15 years later it's a different story. I even prefer to make calls over email. A lot of inner work, but incorporating the topic of stuttering into conversations with my coworkers helped a lot. Also, the more you do something the easier it gets.