【摘要】 针对SIP穿越NAT设备的问题,分析了现有NAT穿越方法ICE,并对ICE方法做了进一步优化。新方案保持了原ICE方法不改动NAT设备,能穿越任何类型NAT的优点,改进了ICE穿越对称型NAT和连通性检测的方法。实验证明改进后的ICE方法能让SIP穿越所有NAT,且缩短了ICE连通性检测过程的时间。更多还原

【Abstract】 According to SIP(Session Initiation Protocol) traversing NAT(Network Address Translation) devices,existing traversing NAT method named ICE(Interactive Connectivity Establishment) is analyzed,which is further optimized and improved.The improved scheme keeps the advantages of original ICE including no modification of NAT device and traversing all kinds of NAT,while improves both ICE traversing symmetrical NAT and connectivity detection.Experiments reveal that the improved ICE method not only ensures SIP to traverse all kinds of NAT,but shorten the time of ICE connectivity detection process as well.更多还原