Method to prevent TTY/TDD probing and unwanted TTY/TDD tone generation on voice gateways
US8204178B1 · kind B1 · utility
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1References
18Claims
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Key dates
| Filing date | Mar 21, 2007 |
| Grant date | Jun 19, 2012 |
| Priority date | — |
| Expiry date | Apr 19, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M11/06
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method to prevent TTY/TDD (teletypewriter/telecommunications device for the deal) probing and unwanted TTY/TDD tone generation on voice gateways comprises detecting a PSTN textphone in a call path, if any; and providing visual clues to an end user, thereby avoiding generation of unwanted text by the end user. The visual clues may be in the form of a dialog box on a computer, warning messages on a phone, and/or the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.