Abstract: A collaboration model is provided for constructing evolutionary collaborative applications deployed in network environments, such as the World Wide Web, or wireless environments, which supports introduction of new object types into the deployed system. The collaboration model is arranged as a set of submodels. The highest-level control resides in a synchronization submodel. A merge submodel defines mechanisms for merging changes, detecting conflicts, and resolving conflicts whenever possible. A change submodel is operative to define allowable changes for shared objects. A replication model is arranged to provide replication functionality, and define how multiple versions of an object are presented. A distribution submodel provides distribution functionality, and a type submodel provides a programming language-independent representational scheme for the overall collaboration model.

Abstract: A method and system for delivering audio and data files includes a data network and a voice network. A user station provided in communication with the data network receives data files. A telephone provided in communication with the voice network receives audio files. An application server in communication with the data network stores and executes applications programs which include audio features. An audio server in communication with the application server and the voice network is operative to dial a telephone, deliver a selected audio file to the telephone, or record and store an audio file.