The scope of this Recommendation is to identify the requirements for Mobility Management (MM) for NGN. Note that the scope of this Recommendation is not limited to a specific level of mobility and covers full mobility. To that end@ this Recommendation describes the following: ? Considerations of MM for NGN; ? Classification of MM types for NGN; ? Requirements for MM for NGN. Administrations may require operators and service providers to take into account national regulatory and national policy requirements in implementing this Recommendation.