N7700 two-way SD interactive DTV set-top box ,energy-saving and environment friendly,which completely meet DVB-C ... standard OutlineN7700 two-way SD interactive DTV set-top box ,energy-saving and environment friendly,which completely meet DVB-C ... browserSupport one-way service,such as: EPG,NVOD,datacasting,advertisement,stock,etcSupport two-way service,such as: VOD,interactive game,unionpay ...