Seamless redundant echo canceller replacement in a multi-channel echo canceller
US7120130B2 · kind B2 · utility
1Cited by
6References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2001 |
| Grant date | Oct 10, 2006 |
| Priority date | — |
| Expiry date | Oct 6, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B3/23
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An echo cancelling system comprises a system controller for directing inbound and outbound PCM signals to one of two echo canceller modules. The system controller receives status information from the echo cancellers and maintains state information pertaining to the active echo canceller, in order to allow seamless switchover from one echo canceller to the other without interrupting service.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.