Commonality and interoperability between IP Multimedia System (IMS) core networks
The present document defines the key architectural items that are the building blocks for achieving commonality and interoperability between IMS core networks that possibly use different IP Connectivity Networks. Specific IP-connectivity access network technologies and their details are not within the scope of the present document.It is expected that one solution will be developped and finetuned for each of these architectural items. The present Technical Report serves as a placeholder for the solutions under development. When the solution reaches maturity, Change Requests against the relevant Technical Specifications will be raised.