N-ways conference system using only participants' telephony devices without external conference server
US7496188B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2004 |
| Grant date | Feb 24, 2009 |
| Priority date | — |
| Expiry date | Feb 15, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M3/12
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An n-ways conferencing system using only the participants' telephony devices and without an external conference server. A plurality of telephony devices dial in to and report their mixing capability to a connection topology manager. The connection topology manager also determines the location of each telephony device and neighboring telephony device pairs in the conference service, as each telephony device is used for mixing voice signals of its closest neighbors, and calculates a minimum conference traffic delay for each telephony device. The connection topology manager then builds a topology for the conference service based on the mixing capability, location, and minimum conference traffic delay, wherein the connection topology manager distributes a mixing computation in a substantially uniform manner across the plurality of telephony devices. When a change in the network condition is detected, the connection topology manager rebuilds the topology to bypass the change in the network condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.