传统的语音运营商现在提供更为复杂和多样化的业务，包括IPTV ，手机点播和视频点播。

Traditional voice carriers now offer more complex and diverse services, including IPTV, mobile and video on demand.

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视频点播系统是数字电视业务中最重要的增值服务之一。

The Video On Demand System is one of value-added service the most important vocational work in the Digital Television .

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视频点播系统是信息网络的重要业务系统，它的运行情况直接影响到信息传递的有效性和用户的满意程度。

VOD is a very important system for bring people video information. It's running quality direct effects the stability of all other telecommunication operations.

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