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论文类型：期刊论文

发表时间：2014-07-28

发表刊物：Shanghai Jiaotong Daxue Xuebao/Journal of Shanghai Jiaotong University

收录刊物：EI、PKU、ISTIC

卷号：48

期号：7

页面范围：1021-1025

ISSN号：10062467

摘要：In order to adapt to the requirements and higher performance of train passenger information system (PIS), the design scheme of SIP-based PIS was proposed, in which a detailed solution for the train intercom and broadcast based on SIP was introduced. The session management and media negotiation were completed by fully using the SIP methods and SDP negotiation mechanisms. To verify the feasibility of the audio control unit, a software architecture and various software modules were implemented. The experimental result shows that the train audio control unit can accurately complete all the preset functions.