也叫网络电视，是指基于IP协议的电视广播服务。
PTV , also known as network TV, is based on IP protocol television services.
梦幻卫星电视是首个全数字直接到家庭（DTH）电视广播服务，通过在菲律宾卫星。
DREAM Satellite TV is the first all-digital Direct-To-Home (DTH) television broadcasting service via satellite in the Philippines.
数字服务也可以是交互式的，允许民意测验和智力竞赛的节目，文字电视广播改良后的译本和照相视角的选择。
The digital services also will be interactive, allowing participation in polls and quiz shows, improved versions of Teletext, and a choice of camera angles on some coverage.
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