Method and apparatus for eliminating false voice detection in voice band data service
US7609646B1 · kind B1 · utility
5Cited by
18References
40Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2004 |
| Grant date | Oct 27, 2009 |
| Priority date | — |
| Expiry date | Jun 26, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/66
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system in a Voice Over Internet Protocol (VOIP) network eliminates false voice detection in voice band data service (e.g., modem or facsimile transmission) by sequentially enabling silence detection then voice detection. In Voice Band Data (VBD) mode, the system initially enables silence detection and disables voice detection. If silence is detected in a VOIP signal associated with a VOIP call, the system enables voice detection. If voice is detected, the system switches from VBD mode to voice mode and enables processing (e.g., echo cancellation and/or data compression) that improves voice communications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.