The embodiment of the invention provides a
data information acquisition method and device, related equipment and a medium. The method comprises the following steps: acquiring a capability calling subscription request sent by a second
functional network element based on subscription request parameter information, wherein the signing request parameter information is determined by
authentication response parameter information, the
authentication response parameter information is obtained by performing
authentication processing on the capability calling request by the network open function equipment, and the capability calling request is sent by the second function
network element based on the first subscription rule; acquiring access parameter information from the signing request parameter information, and performing signing
verification on the capability calling signing request based on the access parameter information; generating capability calling contract signing response informationfor the capability calling contract signing request when contract signing
verification succeeds, and returning the capability calling contract signing response information to the second function
network element, wherein the capability calling subscription response information is used for indicating the second
functional network element to access the first
functional network element. By adopting the method and the device, the
data information acquisition efficiency can be improved.