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    • 3. 发明授权
    • Dynamic E911 updating in a VoIP telephony system
    • 在VoIP电话系统中进行动态E911更新
    • US07697509B2
    • 2010-04-13
    • US11144445
    • 2005-06-03
    • Gregory A. FreitagMohamad M. MehioGerald W. PflegingGeorge P. Wilkin
    • Gregory A. FreitagMohamad M. MehioGerald W. PflegingGeorge P. Wilkin
    • H04L12/66H04M11/04
    • H04M15/00H04M15/56H04M2215/202
    • A method in one example comprises the steps of establishing a location database for a first network that associates Internet Protocol address information for VOIP telephony devices with physical locations for the VOIP telephony devices; upon detecting registration of a VOIP telephony device through a network port of the first network, determining physical location of the VOIP telephony device by identifying physical location of the network port through which the VOIP telephony device is connected, and updating the location database; and, upon detecting IP telephony activity originating from a remote VOIP telephony device connected to the first network through a VPN gateway, determining physical location of the remote VOIP telephony device connected through the VPN gateway by identifying physical locations of network resources of a second network to which the remote VOIP telephony device is connected, and updating the location database; such that updated location information is provided to a 911 server in the event that an emergency call is originated by any VOIP telephony device or remote VOIP telephony device.
    • 在一个示例中的方法包括以下步骤:建立用于VOIP电话设备的因特网协议地址信息与VOIP电话设备的物理位置相关联的第一网络的位置数据库; 在通过所述第一网络的网络端口检测到VOIP电话设备的注册后,通过识别所述VOIP电话设备所连接的网络端口的物理位置来确定所述VOIP电话设备的物理位置,并更新所述位置数据库; 并且在通过VPN网关检测源自连接到第一网络的远程VOIP电话设备的IP电话活动时,通过将第二网络的网络资源的物理位置标识为通过VPN网关连接的远程VOIP电话设备的物理位置来确定 远程VOIP电话设备连接,并更新位置数据库; 使得在由任何VOIP电话设备或远程VOIP电话设备发起紧急呼叫的情况下,将更新的位置信息提供给911服务器。