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Session Objects

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A session defines an association of two or more users participating in some form of communication or collaboration with each other. Depending on the communication mode, a session can be either a media session type or a conference session type. A media session can be an instant messaging, audio/video, or application session. They all involve media being transmitted among the session participants. A conference session, however, does not involve exchange of media. In Unified Communications Client API, a conference and a conference session have different meanings. An active conference consists of a conference session and one or more media sessions. The conference session encapsulates the association of a group of conference participants and supports the functionalities for managing the association. The conference session itself does not involve media exchange. In a media session, a Unified Communications Client API application can control the communication flow by means of session call control. An audio-only media session can involve VoIP devices and PBX telephone sets.

The following diagram illustrates the architecture of the object model for sessions in Unified Communications Client API.