The Promise — and Curse — of Open Offices
Stowe Boyd

People working in groups at someone’s desk in loud voices, telephone calls on high speaker volumes could create , not just disturbance, but unnecessary conflict. May be there could be some way - like allowing people to post messages (anonymously) on some common message board in case of disturbance so that some neutral party( say Admin team) can put the point across to the concerned people without any conflict.
Open office plans assume that individuals would respect others privacy , but in the absence of it there should be some way for people to voice out their concerns, without causing any rupture between the individuals.
Some mid-way solution should be implemented instead of living with the problem, if it is agreed that this effects the performance of the individual and the organization.