3.2.2.1.6 Collection of Inactive Activities
Collection of Inactive Activities: The CAS also maintains a list of currently inactive activity elements with the corresponding server that represents currently inactive asynchronous connections established with the server.
A Collection of Inactive Activities is initially empty and gets a new element added to it when the Active Call Reference counter for an activity goes to zero.
Activity elements are removed from the Collection of Inactive Activities by the Inactive Activity Timer.