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How to discover the suited telecommunications service more quickly is important for improving the user experience. In the field of semantic web service most of discovery algorithms pay attention to the precision of service discovery, while few algorithms concentrate on the efficiency of service discovery. Therefore, this paper presents a heuristic algorithm based on iteration for semantic telecommunications services discovery, which can improve the efficiency of services discovery effectively. We also found the implied relevance during the matching process, which is not concerned by others. At last we have built a prototype and evaluated the performance of algorithm proposed by this paper. The experimental result shows the new algorithm can improve the efficiency of services discovery effectively and ensure the precision of web services discovery. [ABSTRACT FROM AUTHOR]