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US 8,913,983 B2Granted
Voice over internet protocol (VoIP) E911 metro street address guide (MSAG) validation
AssigneeTeleCommunication Systems, Inc.
InventorTimothy J. Lorello
Life of this patent
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Abstract
An overlay list of MSAG-valid addresses is created for use in lieu of (or in addition to) the lat/Ion or postal address which otherwise would go with an E911 VoIP 911 call. This overlays the nation with a series of MSAG-addressed polygons, with center points identified in those polygons, and MSAG-valid addresses provided to the PSAPs for those centers, preferably along with the original latitude/longitude coordinates.
Claims7
A method of providing location information to a public safety answering point (PSAP), comprising:
- receiving, at a physical server, latitude/longitude information associated with a voice-over-Internet-protocol (VoIP) caller device;
- mapping, at said physical server, said latitude/longitude information to a polygon;
- retrieving, at said physical server, an MSAG-valid address associated with an approximate center point of said polygon;
- and
- providing said MSAG-valid address associated with said polygon to a public safety answering point (PSAP) responsible for said approximate center point of said polygon.
2 more elements
Dependencies are inferred from the claim text.