推荐回答（2个）
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IPTV
IPTV即交互式网络电视，是一种利用宽带网，集互联网、多媒体、通讯等技术于一体，向家庭用户提供包括数字电视在内的多种交互式服务的崭新技术。它能够很好地适应当今网络飞速发展的趋势，充分有效地利用网络资源。
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服务类型
用户在家中可以有三种方式享受IPTV服务：⑴计算机；⑵网络机顶盒+普通电视机；⑶移动终端（如手机，IPad等）。它能够很好地适应当今网络飞速发展的趋势，充分有效地利用网络资源。IPTV既不同于传统的模拟式有线电视，也不同于经典的数字电视。因为，传统的和经典的数字电视都具有频分制、定时、单向广播等特点；尽管经典的数字电视相对于模拟电视有许多技术革新，但只是信号形式的改变，而没有触及媒体内容的传播方式。
IPTV标准化
中国通信标准化协会(CCSA)IP与多媒体工作委员会于2005年8月成立了IPTV特别工作组，启动了对IPTV标准的研究和制定工作。参加IPTV特别工作组的单位几乎包含了现阶段从事IPTV业务运营、开发和研究的国内外所有运营商、制造商和研究机构。
IPTV特别工作组第一阶段的立项有6个：IPTV业务需求、IPTV体系架构、IPTV业务平台与内容平台接口、IPTV业务平台与STB接口、支持IPTV的DSLAM设备及STB设备技术规范等。现阶段所有6个标准都进入了“报批稿”阶段，有的（如“业务需求”）已结束第一阶段的工作进入了第二阶段的制定工作。
IPTV特别组于2006年5月新启动了“IPTV对承载网的技术要求”、“内容、业务和网络安全”、“网络管理与业务管理”、“业务运营平台”和“终端测试规范”等12个相关标准的研究工作。现阶段包括“网络管理与业务管理”等部分标准也已经进入了送审稿甚至报批稿阶段。
首先查看ITV机顶盒的状态，是否有红灯亮起，如果有那肯定是机顶盒通过网线与宽带猫未连接通的；如果机顶盒状态正常，那就试试宽带看如何，如果宽带也不正常就报修吧
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