【摘要】 基于SIP协议,提出了一种应用于高速公路监视控制系统的VoIP接听控制网关模块的设计与实现。通过该模块的使用可以避免计算机网络和电话网络的重复建设,提高线路的协同工作效率,同时用此模块取代传统的PBX,可大大降低设备运行维护成本。更多还原

【Abstract】 This paper proposes a scheme for design and actualization of VoIP control gateway module based on SIP protocol applied in expressway monitor and control system.Through use of this module,it is available to avoid repetitive construction of computer network and telecom network and improve circuitry cooperation work efficiency.Meanwhile it is also a good substitute of traditional PBX and may lead to great reduction of device maintenance cost.更多还原