Data communication system between a personal computer and facsimile machine through an interface

摘要

In a data communication system in which an information processing terminal and a data communication apparatus are connected to each other via an interface, and the data communication apparatus executes data communication in response to an instruction from the information processing terminal, the data communication apparatus determines error calling in the instructed data communication, and notifies the information processing terminal of the determination of error calling. The information processing terminal disables an instruction of data communication to an address corresponding to the error calling based on the notification of the determination of error calling.