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    • 3. 发明申请
    • SS7 ANSI-40 TO SIP BASED CALL SIGNALING CONVERSION GATEWAY FOR WIRELESS VOIP E911
    • SS7 ANSI-40到基于SIP的呼叫信号转换网关无线网络E911
    • US20160242016A1
    • 2016-08-18
    • US15136444
    • 2016-04-22
    • TELECOMMUNICATION SYSTEMS, INC.
    • DON MITCHELL
    • H04W4/22
    • H04W4/90H04L12/66H04M7/0066H04W88/16
    • An SS7-based call protocol conversion gateway that translates between circuit-switched SS7 protocols and session initiation protocol (SIP) oriented protocol, allowing an E911 call initiated over a switched network to be routed by a VoIP network. The SS7-based call protocol conversion gateway provides a PSAP with MSAG quality (street address) information about a VoIP dual mode phone user without the need for a wireless carrier to invest in building out an entire VoIP core. Thus, wireless carriers may continue signaling the way they are today, i.e., using the J-STD-036 standard for CDMA and GSM in North America, yet see benefits of a VoIP network core, i.e., provision of MSAG quality location data to a PSAP.
    • 基于SS7的呼叫协议转换网关,其转换电路交换SS7协议和面向会话发起协议(SIP)的协议,允许通过交换网络发起的E911呼叫由VoIP网络路由。 基于SS7的呼叫协议转换网关为PSAP提供了有关VoIP双模手机用户的MSAG质量(街道地址)信息,无需无线运营商投资建设整个VoIP内核。 因此,无线运营商可以继续向当前的方式发信号,即在北美使用用于CDMA和GSM的J-STD-036标准,但是看到VoIP网络核心的好处,即提供MSAG质量位置数据到 PSAP。