US Patent 8717408 Conducting a private videoconference within a videoconference via an MCU

Conducting a private videoconference within a videoconference. A videoconference may be established between a plurality of endpoints. Input may be received requesting the private videoconference for a plural subset of the plurality of endpoints. The private videoconference may be established between the plural subset of the plurality of endpoints. The initial videoconference may continue during the private videoconference. Private videoconference data may be transmitted only to the plural subset of endpoints of the private videoconference. The private videoconference may be sent directly between the plural subset of endpoints or may be sent via a multipoint control unit, e.g., of the initial videoconference. The private videoconference data may not be sent to the remaining endpoints of the initial videoconference.