Conference Blob Controls

The following diagram illustrates the main objects involved in TAPI 3.0 conference blob controls. Interfaces shown are hyperlinked into the relevant reference pages.

The conference blob contains provider-specific information on a conference object. A pointer to the ITConferenceBlob interface blob is obtained by doing a QueryInterface on ITDirectoryObjectConference. The ITConferenceBlob interface provides methods for basic manipulation of a generic conference blob. An application using non-SDP conference blobs must implement its own methods for detail manipulation.

Rendezvous provides the ITSdp interface for manipulating SDP conference blobs. The SDP is a protocol for describing multimedia sessions and their related scheduling information. For additional information on the SDP protocol, locate Internet Engineering Task Force (IETF) RFC 2327 entitled "SDP: Session Description Protocol." If the ITSDP interface exists for a given conference blob, you can obtain a pointer to it by doing a QueryInterface on ITConferenceBlob.

For SDP conference blobs, the ITTimeCollection, ITTime, ITMediaCollection, and ITMedia interfaces allow detailed control of SDP conference time and media characteristics.