A system and method for providing data communication between an information system, such as a LAN, and a communication system, such as a PBX operating under control of an automatic call routing system, is disclosed. According to a preferred embodiment, data as to a particular LAN user's schedule, as reflected in an electronic calendar application, is used to properly route calls via the automatic call routing system. Alternative embodiments providing for the scheduling of events in the electronic calendar as well as the dissemination of information through the communication system are also disclosed.