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With service design open to third-party in the evolving telecom networks, dynamic method is suitable for Feature Interaction (FI) detection. When implementing this method, however, the violation of user intension is difficult to express as an indication of FI. To overcome this, a duplicate of Application Server called FRS (Feature-Representation Server) is proposed to add into the network, where each feature can run again individually and the running results are sent back as desirable results to compare with those obtained in the working environment. Interaction exists if they are inconsistent. An algorithm for detecting such kind of FI is given with an experiment for demonstration.
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