This Recommendation describes a core architecture functionality of next-generation STB that operators and equipment vendors MAY elect to follow in making network and product investment decisions. This architecture defines a cost-efficient platform with capacity and flexibility to support growth of on-demand video, high definition digital TV, managed in-home networks connecting a wide range of consumer-provided devices, and future IP multimedia services including IP voice, video telephony, and multiplayer gaming. The goal ofthis Recommendation is to provide core functionalities and can serve asfoundations for network specific environments. It SHOULD be noted that home networking portion of this architecture is based upon ITU-T Rec. J.190. In actual implementation of NG-STB-A functionalities, thisRecommendation MUST be used with either ITU-T Rec. J.292 or ITU-T Rec. J.291 based on access network availability.