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    • 6. 发明授权
    • Enhanced E911 location information using voice over internet protocol (VoIP)
    • 使用互联网语音协议(VoIP)增强E911位置信息
    • US06940950B2
    • 2005-09-06
    • US10739292
    • 2003-12-19
    • Richard DickinsonRoger MarshallSteven P. Helme
    • Richard DickinsonRoger MarshallSteven P. Helme
    • H04L12/66H04M11/04
    • H04M11/04H04L12/66H04M3/5116H04M2242/04H04W76/50
    • An E-9-1-1 voice-over-IP (VoIP) solution is provided wherein a 911 call from a wireless VoIP device is routed directly to the correct Public Safety Answer Point (PSAP) via dedicated trunks, together with correct location information and call-back number. VoIP gateways are implemented locally, at least one per LATA, and accept VoIP packetized data inbound, and convert it to standard wireline voice calls. Calls are routed to an IP address at the VoIP gateway, which then egresses the call to a voice port at a selective router. Dedicated voice trunks (CAMA, SS7, FG-D) are installed between each local VoIP gateway and appropriate selective routers. An Automatic Location Identification (ALI) database is provisioned with ESRKs dedicated for VoIP use. TCP/IP circuits may be established between some or all of the various local VoIP gateways.
    • 提供了一种E-9-1-1 IP语音(VoIP)解决方案,其中来自无线VoIP设备的911呼叫经由专用中继线直接路由到正确的公共安全接收点(PSAP),以及正确的位置信息 和回拨号码。 VoIP网关在本地实现,每个LATA至少有一个,并接收VoIP分组数据入站,并将其转换为标准有线语音呼叫。 呼叫路由到VoIP网关的IP地址,VoIP网关然后将呼叫从出口到选择性路由器的语音端口。 专用语音中继线(CAMA,SS7,FG-D)安装在每个本地VoIP网关和适当的选择性路由器之间。 自动位置识别(ALI)数据库配有专用于VoIP使用的ESRK。 可以在部分或全部各种本地VoIP网关之间建立TCP / IP电路。