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    • 4. 发明授权
    • Enhanced emergency service for ISDN based emergency services in a wireless telecommunications system
    • 在无线电信系统中为基于ISDN的紧急服务增强紧急服务
    • US06256489B1
    • 2001-07-03
    • US08847370
    • 1997-04-24
    • Joseph James LichterMichael Joseph MeyerTed Moulos
    • Joseph James LichterMichael Joseph MeyerTed Moulos
    • H04Q722
    • H04Q3/66H04Q2213/13091H04Q2213/13097H04Q2213/13098H04Q2213/13103H04Q2213/13141H04Q2213/13176H04Q2213/13209H04Q2213/1337H04W4/90H04W76/50
    • The system of the invention passes wireless caller location information through the common channel signaling network (CCSN) to the PSAP such that the PSAP can provide enhanced emergency services. The caller location information such as the latitude and longitude of the wireless device or the cell and cell sector from which a call is made is encoded in the ISUP (ISDN User Part) of the call set up message over the CCSN. The public switched network routes the call based on the called party number (CDPN) parameter to the appropriate selective router and the selective router routes the call to the appropriate PSAP based on the caller location. The caller location information is transmitted over an ISDN interface to the PSAP. The PSAP can then access additional caller information based on the CDPN parameter to provide enhanced emergency services. Thus, the system of the invention allows enhanced 9-1-1 service to be provided in wireless systems while utilizing existing wireless infrastructure and protocols.
    • 本发明的系统通过公共信道信令网络(CCSN)将无线呼叫者位置信息传递到PSAP,使得PSAP可以提供增强的紧急服务。 诸如无线设备的纬度和经度的呼叫者位置信息或进行呼叫的小区和小区扇区通过CCSN被编码在呼叫建立消息的ISUP(ISDN用户部分)中。 公共交换网络将呼叫根据被叫号码(CDPN)参数路由到适当的选择性路由器,并且选择性路由器根据呼叫者位置将呼叫路由到适当的PSAP。 呼叫者位置信息通过ISDN接口发送到PSAP。 然后,PSAP可以基于CDPN参数访问附加的呼叫者信息,以提供增强的紧急服务。 因此,本发明的系统允许在无线系统中提供增强的9-1-1服务,同时利用现有的无线基础设施和协议。