scope:

The objective of this Recommendation is to describe the service and functional requirements of the managed delivery services (MDS) provided by an NGN provider to third-party providers via ANI (application network interface), with features supported by the next generation network (NGN) [ITU-T Y.2001], [ITU-T Y.2011], [ITU-T Y.2012], and [ITU-T Y.2201].

The service and functional requirements described in this Recommendation are built on the NGN general reference model [ITU-T Y.2011] and generalized functional architecture [ITU-T Y.2012]. This Recommendation describes the service concept of MDS, the business model among players relevant to MDS, the service requirements of MDS, profiles for MDS management, the functional architecture model, MDS service scenarios, and security considerations for MDS.

This Recommendation describes several service scenarios to show how MDSs are operated. These service scenarios are described from a service procedural point of view, as well as in terms of the functional entities involved.