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 investmentdecisions. 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 awide range of consumer-provided devices, and future IP multimedia services including IP voice,video telephony, and multiplayer gaming. The goal of this Recommendation is to provide corefunctionalities and can serve as foundations 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, this Recommendation MUST be used with either ITU-T Rec. J.292 or ITU-T Rec. J.291 based on access network availability.