How to issue requirements for integration in accordance with GOST 34?

Question

User interface

Which documents, sections and tables should describe the mechanisms and details of interface exchanges with existing systems?
It would be very clear to see examples of such documents

Answer 1

Sort of like B1 and B2, input and output signals. The protocols and concepts are described in the "software description" and "software". I don't remember the ciphers of the documents. But it is possible to structure and arrange similar information in different documents.
As I understand it, your main question is the protocol for interaction between systems. And this topic can even be given in the appendix to the Software Description, GOST 34 ... or GOST 19 ....