International audienceThe possession of mobile devices with the ”always online”paradigm eased a lot our communication habits: contacting somebodyis becoming more and easier. A major drawback of this is the scenariowhen an important meeting is interrupted by an unexpected phone callfrom a friend. The need for an efficient control of unexpected incomingcommunication intention is immediate. This paper proposes the efficienthandling of interruptions from the user modeling perspective.We proposea mechanism to build user preferences that specify the level of interrupt-ibility during an activity, situation or event. The proposed mechanism isbuilt upon semantic technologies for dynamic and interoperability pur-poses