Location determination capabilities for emergency call services
US7742578B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 2006 |
| Grant date | Jun 22, 2010 |
| Priority date | — |
| Expiry date | Apr 20, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2242/30
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A communication system comprising an access system configured to provide a plurality of end devices with access to a packet communication network, a first end device of the plurality of end devices configured to transmit a first query to the access system, receive a first response indicating a first identifier for the access system, transmit a registration message indicating the first identifier and a second identifier for the first end device, and transmit a first call request for a call wherein the first call request indicates the second identifier, and a call processing system in communication with the first end device and configured to receive the registration message, store the first identifier in association with the second identifier, receive the first call request, process the second identifier to determine the first identifier stored in association with the second identifier, and transmit a second call request indicating the first identifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.