The UCMA 2.0 Software Development Kit (SDK), available at http://go.microsoft.com/fwlink/?linkid=143314, contains significant new functionality compared to the 1.0 release. This new functionality provides the application programmer with the ability to do the following:
Create and control multimodal calls that include both IM and audio.
Create, schedule, and participate in multiparty conferences.
Publish and subscribe to presence information.
The UCMA SDK is designed to operate using an asynchronous programming model that provides for maximum throughput for applications that need scalability. In addition, the design of the SDK enables you to extend the programming model to add new media types.