Enhanced communication services and apparatus
US4924495A · kind A · utility
Inventors
Key dates
| Filing date | Sep 1, 1988 |
| Grant date | May 8, 1990 |
| Priority date | — |
| Expiry date | Sep 1, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S379/912
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for communicating between a first communication terminal and any selected one of a group of second remotely disposed compatible communication terminals using a designated communication service of a designated common carrier having at least one toll switch connectable via local telephone company central offices between the first terminal and any selected second terminal. Each second terminal has at least one different postal zip code assigned thereto that designates the geographical location thereof. Each second terminal is provided with means to receive a designated security code of digits from a toll switch which identifies the designated service, means to record the time, date and type of call identified by the designated security code, means to initiate receipt of any message transmitted thereto, means responsive to the end of any message transmitted thereto to terminate reception and to send an end of reception signal to said toll switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.