On the infology of documentary exchange

The article deals with the infological aspects of the specialized hardware-software communication complex, which is part of the automated system of documentary exchange. The generalized architecture of the hardware of the complex and the main elements of the structure of its functional software are given. The structure of a number of software components is formalized in the notations of extended Petri nets. The formal definition of switching and the description of the organization of the transmission of documentary messages are stated.