Screen-based telephone set for interactive enhanced telephony service
US5615257A · kind A · utility
62Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1994 |
| Grant date | Mar 25, 1997 |
| Priority date | — |
| Expiry date | Dec 13, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M3/428
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An interactive subscriber telephone terminal, comprising: a display screen; a plurality of temporarily definable response/data entry keys; and local control means for selectively causing the display screen and/or the response/data entry keys to be controlled by one of: remote signals transmitted to the terminal from a telephone switching office, and the local control means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.