Abstract: A method, equipment, and conference system for a call progress state are provided. The adopted scheme includes: after a call request is sent to a called terminal, multimedia indication information of a call progress state is obtained. The multimedia indication information of the call progress state is sent to a management station of conference control device and/or a conference terminal, so that the management station of conference control device and/or the conference terminal output a corresponding multimedia indication of a progress state according to the multimedia indicating output information of the call progress state.

Abstract: A method for realizing a private session in a multipoint conference is provided. The method includes: establishing, by a multipoint control unit (MCU), a private session according to a private session establishment request carrying private session participant identifiers (IDs) sent by a private session initiator, and sending audio code streams of private session participants corresponding to the private session participant IDs. A device for realizing a private session in a multipoint conference is further provided. Thus, a part of participants can discuss privately while normally listening to the content of the multipoint conference.

Abstract: The present invention discloses a method for displaying site information in a videoconferencing system. According to the method, a control equipment acquires status information of sites in the course of a videoconference, and acquires information of un-enrolled sites according to the acquired status information of the sites. The control equipment sends the obtained information of the un-enrolled sites to a terminal periodically or on receiving a request from the terminal. After receiving the information of the un-enrolled sites, the terminal displays the information of the un-enrolled sites on a screen; thereby the user can examine and perform further control operations conveniently.

Abstract: A method, equipment, and conference system for a call progress state are provided. The adopted scheme includes: after a call request is sent to a called terminal, multimedia indication information of a call progress state is obtained. The multimedia indication information of the call progress state is sent to a management station of conference control device and/or a conference terminal, so that the management station of conference control device and/or the conference terminal output a corresponding multimedia indication of a progress state according to the multimedia indicating output information of the call progress state.

Abstract: A method for realizing a private session in a multipoint conference is provided. The method includes: establishing, by a multipoint control unit (MCU), a private session according to a private session establishment request carrying private session participant identifiers (IDs) sent by a private session initiator, and sending audio code streams of private session participants corresponding to the private session participant IDs. A device for realizing a private session in a multipoint conference is further provided. Thus, a part of participants can discuss privately while normally listening to the content of the multipoint conference.

Abstract: The present invention discloses a method for displaying site information in a videoconferencing system. According to the method, a control equipment acquires status information of sites in the course of a videoconference, and acquires information of un-enrolled sites according to the acquired status information of the sites. The control equipment sends the obtained information of the un-enrolled sites to a terminal periodically or on receiving a request from the terminal. After receiving the information of the un-enrolled sites, the terminal displays the information of the un-enrolled sites on a screen; thereby the user can examine and perform further control operations conveniently.