Solutions for voice over internet protocol (VoIP) 911 location services
First Claim
1. A method of providing mid-call updating of a location of a Voice-over-Internet Protocol (VoIP) terminal, comprising:
- requesting, in response to a Session Initiation Protocol (SIP) request message from a VoIP location server, updated geographic location information relevant to movement of a VoIP terminal during an established call with said VoIP terminal, said updated geographic location information being requested subsequent to establishment of said established call;
retrieving a record of said established call based on an Emergency Services Location Key (ESLK);
sending, at said VoIP location server, subsequent to establishment of said established call a SIP response message indicating said updated geographic location information is required to be transmitted to a VoIP switch; and
transmitting said requested updated geographic location information relevant to said movement of said VoIP terminal to a requesting physical device.
2 Assignments
0 Petitions
Accused Products
Abstract
An E-9-1-1 voice-over-IP (VoIP) solution is provided wherein a 911 call from a mobile 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. Mid-call updating of location of a moving VoIP terminal is provided to a PSAP. The location of the VoIP is validated using HTTP based protocol by pushing location information to a VoIP location server, and comparing it against a geographic location database to confirm that a contained street address is valid.
564 Citations
32 Claims
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1. A method of providing mid-call updating of a location of a Voice-over-Internet Protocol (VoIP) terminal, comprising:
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requesting, in response to a Session Initiation Protocol (SIP) request message from a VoIP location server, updated geographic location information relevant to movement of a VoIP terminal during an established call with said VoIP terminal, said updated geographic location information being requested subsequent to establishment of said established call; retrieving a record of said established call based on an Emergency Services Location Key (ESLK); sending, at said VoIP location server, subsequent to establishment of said established call a SIP response message indicating said updated geographic location information is required to be transmitted to a VoIP switch; and transmitting said requested updated geographic location information relevant to said movement of said VoIP terminal to a requesting physical device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A Voice-over-Internet Protocol (VoIP) location server for providing mid-call updating of a location of a VoIP terminal, comprising:
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a transmitter, at said VoIP location server, to transmit a request, in response to a Session Initiation Protocol (SIP), for updated geographic location information relevant to movement of a VoIP terminal during an established call with said VoIP terminal, said updated geographic location information being requested subsequent to establishment of said established call; and a retriever to retrieve a record of said established call based on an Emergency Services Location Key (ESLK); a sender, at said VoIP location server, to send subsequent to establishment of said established call a SIP response message indicating said updated geographic location information is required to be transmitted to a VoIP switch; wherein said transmitter transmits said requested updated geographic location information relevant to said movement of said VoIP terminal to a requesting physical device. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A method of providing mid-call updating of a location of a Wireless Fidelity (WiFi) terminal, comprising:
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requesting, in response to a Session Initiation Protocol (SIP) request message from a VoIP location server, updated geographic location information relevant to movement of a WiFi terminal during an established call with said WiFi terminal, said updated geographic location information being requested subsequent to establishment of said established call; retrieving a record of said established call based on an Emergency Services Location Key (ESLK); sending, at said VoIP location server, subsequent to establishment of said established call a SIP response message indicating said updated geographic location information is required to be transmitted to a VoIP switch; and transmitting said requested updated geographic location information relevant to said movement of said WiFi terminal to a requesting physical device. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
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26. A Voice-over-Internet Protocol (VoIP) location server for providing mid-call updating of a location of a Wireless Fidelity (WiFi) terminal, comprising:
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a transmitter, at said VoIP location server, to transmit a request, in response to a Session Initiation Protocol (SIP), for updated geographic location information relevant to movement of a WiFi terminal during an established call with said WiFi terminal, said updated geographic location information being requested subsequent to establishment of said established call; and a retriever to retrieve a record of said established call based on an Emergency Services Location Key (ESLK); a sender, at said VoIP location server, to send subsequent to establishment of said established call a SIP response message indicating said updated geographic location information is required to be transmitted to a VoIP switch; wherein said transmitter transmits said requested updated geographic location information relevant to said movement of said WiFi terminal to a requesting physical device. - View Dependent Claims (27, 28, 29, 30, 31, 32)
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Specification