One objective of NGN is to enable seamless delivery of services across users' multiple devices
served across different environments (home, cellular, enterprise, etc.) that are connected across
multiple access networks in one operator domain or different operator domains. As users move
across different environments, their services are managed and delivered to them seamlessly and
with ease. The converged services framework (CSF) is designed to provide a common point of
coordination for services, mobility, preferences, resources and the state of users on a per-user basis.
This Recommendation defines the high-level requirements and functional architecture for the CSF.
In addition, this Recommendation provides example use case scenarios (see Appendix I) to
highlight the functionality of the CSF.
ITU-T Y.2013-2006 history
2006ITU-T Y.2013-2006 Converged services framework functional requirements and architecture