Recommendation ITU-T H.248.63 contains packages that allow a media gateway controller (MGC) and media gateway (MG) to work together to allow a MG to manage its resources in the most efficient manner possible. It allows the MGC to indicate which resources may be used in the Context and whether the use of certain resources will change or not for the life of the Termination/Stream. The MG can then use this information to optimize the allocation and use of resources.