Provides call creation services to the collaboration platform.
Assembly: Microsoft.Rtc.Collaboration (in Microsoft.Rtc.Collaboration.dll)
By default, the collaboration platform will use an instance that will create specific calls available in the platform to handle media types handled within the collaboration platform. For example, message, audio, video, image are examples of media types that can be handled by InstantMessagingCall and AudioVideoCall. The application can create an instance of derived class and set it on the collaboration platform to handle extended media types that are not handled by the collaboration platform. The derived class can create extended call types based on information given.
Media types supported by a specific call factory should be case-sensitive and in line with the SDP representation for that media type.