Enhanced E911 Network Access for Call Centers
First Claim
1. A method of providing a call center with access to an Enhanced 911 network supporting a public safety answering point (PSAP), comprising:
- determining a unique PSAP having jurisdictional responsibility for a physical current location of a caller to said call center;
forwarding said caller via a switched telephone network to a VoIP call server;
converting said switched telephone call into a session initiating protocol (SIP) packetized phone call;
querying a VoIP positioning center from said VoIP call server for call routing instructions for said packetized phone call; and
forwarding said SIP packetized phone call based on said call routing instructions to an emergency services gateway for conversation back into a TDM phone call.
4 Assignments
0 Petitions
Accused Products
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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Citations
2 Claims
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1. A method of providing a call center with access to an Enhanced 911 network supporting a public safety answering point (PSAP), comprising:
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determining a unique PSAP having jurisdictional responsibility for a physical current location of a caller to said call center; forwarding said caller via a switched telephone network to a VoIP call server; converting said switched telephone call into a session initiating protocol (SIP) packetized phone call; querying a VoIP positioning center from said VoIP call server for call routing instructions for said packetized phone call; and forwarding said SIP packetized phone call based on said call routing instructions to an emergency services gateway for conversation back into a TDM phone call.
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2-12. -12. (canceled)
Specification