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-Heilongjiang Tietong fixed-line intelligent implementation plan Author: Xu Jinli, Zhang Jinlai, Wang Chuan, Railway Signal & Journal; Communication no 03, 2008
-On the technical application and practical significance of 2.5G fixed-line intelligence Author: Cheng Jindi, Proceedings of the 2006 Communication Development Strategy and Management Innovation Seminar of Communication Management Committee of China Jiaotong University 2006
-Talking about the solution of mixed number distribution service. Author: Liu Fulin, periodical-core periodical Railway Signal &; Communication no 10, 2008
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