A system is disclosed for establishing an interconnection between trading networks. The system receives an access establishment request communicated from a home user subscribed to a home trading network and not subscribed to a foreign trading network, the access establishment request including a request to access a desired application, the desired application associated with the foreign trading network. The system further communicates the access establishment request to a foreign operator computer system and receives an approval of the access establishment request communicated from the foreign operator computer system. The system still further communicates a home user profile including subscriber information to establish an application access on a home access establishment module and a foreign access establishment module, the application access allowing the home user to use the desired application without subscribing to the foreign trading network, the subscriber information including at least one application associated with the home user profile.