An interprocess communication method for transporting messages from an originating place to a terminating place comprises the steps of: providing an operating system-unified interface function, at an operating system independent access (OIA) layer, which is independently accessible to operating systems of a communication apparatus; providing a device-unified interface function, at a device independent access (DIA) layer, which is independently accessible to physical devices of the communication apparatus; and transporting messages, at a unified interprocess communication (UIPC) layer, from the originating place to the terminating place through at least one of the operating system independent access layer and the device independent access layer using information about the terminating place that is provided by a terminating place task, and using a common task architecture based on the task's basic common control flow.