DTMF control
US7142658B2 · kind B2 · utility
3Cited by
10References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 2, 2003 |
| Grant date | Nov 28, 2006 |
| Priority date | — |
| Expiry date | Jul 7, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q1/45
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method of selectively sending a DTMF tone from a terminal to a first or a second destination, wherein the terminal sends a signal comprising at least one DTMF tone to an intermediate module prior to distribution to the intended destination, comprising: receiving the signal at the intermediate module;analyzing the nature of any DTMF tones in a portion of the received signal to determine the intended destination thereof; and sending a DTMF tone corresponding to the DTMF tones in the received signal to the determined destination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.