Summary

Annex A to Recommendation Q.85.6: "Stage 2 description for community of interest supplementary services: Global Virtual Network Service (GVNS)" (1995) contains a Stage 2 description of GVNS modelled as an Intelligent Network Capability Set 1 service. It describes information flows and actions that conform to those of the revised IN CS-1 Recommendations. It is complementary to and consistent with all aspects of Recommendation Q.85.6. It provides information on the IN CS-1 modelling of procedures as defined for GVNS in Recommendation F.16, 1995.

The main body of text of this Annex contains descriptions of the functional requirements of GVNS for a variety of successful and unsuccessful operations. The procedures, functional entities and information flows relate in general to service provision across multiple networks. Access to and from other networks is provided by accessing data across network boundaries, in conformance with IN CS-1 capabilities.