N-ways conference system using only participants' telephony...

Details N-ways conference system using only participants' telephony... N-ways conference system using only participants' telephony...

2004-09-20

2009-02-24

Matar, Ahmad F (Department: 2614)

Telephonic communications

Special services

Conferencing

C379S204010, C379S205010, C379S206010, C379S207010

Reexamination Certificate

active

07496188

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.

REFERENCES:
patent: 6577622 (2003-06-01), Schuster et al.
patent: 7006455 (2006-02-01), Fandrianto et al.
patent: 7298834 (2007-11-01), Homeier et al.
patent: 2003/0023672 (2003-01-01), Vaysman
patent: 2004/0137887 (2004-07-01), Niemi

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