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    • 2. 发明申请
    • APPARATUS AND METHOD FOR SUPPORTING NAT TRAVERSAL IN VOICE OVER INTERNET PROTOCOL SYSTEM
    • 通过互联网协议系统支持语音NAT设备和方法
    • US20100135292A1
    • 2010-06-03
    • US12627388
    • 2009-11-30
    • Si-Nam WOOHyun-A KIMPyung-Bin LIMSang-Il CHOI
    • Si-Nam WOOHyun-A KIMPyung-Bin LIMSang-Il CHOI
    • H04L12/56
    • H04L65/1069H04L12/2865H04L29/125H04L61/2564H04L61/2589H04L65/1053
    • An apparatus and a method for operating an exchange in order to support Network Address Translation (NAT) traversal in a Voice over Internet Protocol (VoIP) system are provided. In the method, when a setup request signal is received from a calling Internet phone, first mapping of an IP address and a User Datagram Protocol (UDP) port of the calling Internet phone to first embedded Media Proxy Solution (eMPS) IP address and UDP port is performed. A setup request of the calling Internet phone including the first eMPS IP address and UDP port information is relayed to a called Internet phone. A response signal including an IP address and an UDP port of the called Internet phone is received from the called Internet phone in response to the setup request. Second mapping of the IP address and UDP port of the called Internet phone to second eMPS address and UDP port is performed. A response signal including the second eMPS IP address and UDP port information is relayed to the calling Internet phone in response to the setup request.
    • 提供了一种用于操作交换机以便在互联网语音协议(VoIP)系统中支持网络地址转换(NAT)遍历的装置和方法。 在该方法中,当从主叫互联网电话接收到建立请求信号时,首先将呼叫因特网电话的IP地址和用户数据报协议(UDP)端口映射到第一嵌入式媒体代理解决方案(eMPS)IP地址和UDP 端口被执行。 包括第一eMPS IP地址和UDP端口信息的呼叫Internet电话的设置请求被中继到被叫网络电话。 响应于设置请求,从被叫互联网电话接收包括被叫Internet电话的IP地址和UDP端口的响应信号。 被叫Internet电话的IP地址和UDP端口映射到第二个eMPS地址和UDP端口。 包括第二eMPS IP地址和UDP端口信息的响应信号被响应于设置请求被中继到主叫因特网电话。