Abstract: The communication system includes an integrated voice (telephone) portion and a network portion connected to each other through a single, common database, where all message and event information is stored. The system recognizes and permits responses by users to incoming telephone calls, voice, E-mail messages and FAX messages. The system permits users in a subscribing organization to communicate with other users with respect to possible tasks and appointments and other events within the organization. The system maintains a calendar and task list for each user as well as group calendars for the subscribing organization.