Emergency wireless telephone and control system, and method
US5563931A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 1994 |
| Grant date | Oct 8, 1996 |
| Priority date | — |
| Expiry date | Aug 16, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W76/50
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The emergency wireless telephone and system describes improved control and service offered in the conventional public telephone system as pertains to cellular telephone service. The system contemplates an emergency wireless telephone, with options, including: (1) a method and system of alerting the user of a mobile emergency phone without the need for keeping the telephone's electronics under power, (2) a system which enables the control and responsibility for a call to be moved further downstream at a cellular telephone switch, by altering the character and use of the mobile identification number and by reprogramming the telephone switch, (3) establishing a hierarchy for and insuring that the identification of the calling party is transmitted, both before and after answer supervision is transferred, (4) an fraud protection, interactive identification system using a key and mathematical operator which both verifies the user's identity and eliminates the need for the look-up of the caller's telephone or account number, (5) an interactive in phone switch which can interactively select between the "A" side and "B" side carriers in a given locale, (6) a system which can implement a man…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.