Summary

This ITU-T Recommendation addresses the framework architecture for interworking of IP-based networks with non-IP networks. The service plane concept applied for interworking is defined in terms of both service and network interworking. General interworking scenarios for service interworking and network interworking are also identified. Details of the interworking model and required interworking functions are described for the case of B-ISDN, N-ISDN or PSTN interworking with IP-based networks.