The solution is to penalize the offenders, in a nice way. I interned at Goldman Sachs on an FX trading floor (very open plan). We had an Interrupter Jar. Every

The solution is to penalize the offenders, in a nice way. I interned at Goldman Sachs on an FX trading floor (very open plan). We had an Interrupter Jar. Everytime someone interupted another person, the interrupter was required to put 20$ (yes 20$, it's chump change for FX Traders) into it. When it filled up, we'd go out and buy beers for the entire team. It worked quite well until we had a fratboy from Boston College. He would interrupt me just so he can fill up the jar and we go drinking.