Enhanced E911 network access for call centers
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United States of America Patent
Stats
-
Apr 3, 2012
Grant Date -
Aug 16, 2007
app pub date -
Feb 16, 2006
filing date -
Feb 16, 2006
priority date (Note) -
In Force
status (Latency Note)
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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).
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