Invention Grant
- Patent Title: Enhanced E911 network access for call centers
- Patent Title (中): 呼叫中心增强的E911网络接入
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Application No.: US11354861Application Date: 2006-02-16
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Publication No.: US08150363B2Publication Date: 2012-04-03
- Inventor: Richard Dickinson , John Gordon Hines , Jonathan Croy
- Applicant: Richard Dickinson , John Gordon Hines , Jonathan Croy
- Applicant Address: US MD Annapolis
- Assignee: TeleCommunication Systems, Inc.
- Current Assignee: TeleCommunication Systems, Inc.
- Current Assignee Address: US MD Annapolis
- Agent William H. Bollman
- Main IPC: H04M11/04
- IPC: H04M11/04

Abstract:
An emergency call (e.g., a 911 call, an alarm company call) forwarded by a telematics call center is routed over the switched PSTN to a Voice Over Internet Protocol (VoIP) call server, where the switched call is converted to a session initiating protocol (SIP) packetized IP call for presentation to an emergency services gateway, which reconverts the call to TDM and connects to a selective router via dedicated circuits, gaining full access to the Enhanced 911 network. This provides a PSAP receiving a call from a telematics call center or other call center with all features available in an Enhanced 911 network, e.g., callback number of the 911 caller, and location of the 911 caller. Location of the caller is provided using a VoIP positioning center (VPC).
Public/Granted literature
- US20070190968A1 Enhanced E911 network access for call centers Public/Granted day:2007-08-16
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