Journal of Shanghai Jiaotong University ›› 2014, Vol. 48 ›› Issue (07): 1021-1025.

• Radiao Electronics, Telecommunication Technology • Previous Articles     Next Articles

Design and Implementation of a Train Audio Control Unit of the Passenger Information System (PIS) Based on SIP

ZHANG Yuanqing,LIU Quanli,WANG Wei
  

  1. (School of Control Science and Engineering, Dalian University of Technology, Dalian 116023, Liaoning, China)
  • Received:2013-07-28 Online:2014-07-28 Published:2014-07-28

Abstract:

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.
 

Key words: session initiation protocol(SIP), passenger information system (PIS), train audio

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