A linkage system includes a facsimile device, an image forming device, and a linkage device through a network. The facsimile device includes a receiver configured to receive a facsimile document through a public line, and a notifying unit configured to transmit reception information about the facsimile document together with a reception event indicating that the facsimile document is received to the linkage device. The linkage device includes a linkage controller configured to transmit a print request to print the facsimile document included in the reception information to the image forming device when the reception event and the reception information are received. The image forming device includes a printing unit configured to print the facsimile document based on the print request.