User-defined set-top box Select your broadband operator in the universal remote control. User-defined set-top boxes support China Mobile Unicom telecom operators. Among the universal remote control operators, broadband operators are selected to facilitate network connection. Therefore, the user-defined set-top box selects your broadband operator in the universal remote control. Huhutong set-top box is a product approved by the Communist Party of China (CPC) Propaganda Department and released by the national news network.