ETSI EN 300 472规定了ITU-R系统B Teletext（ITU-R建议BT.653[3]）使用的方法， 也称为EBU Teletext（参见EN 300 706[4]），可在DVB比特流中传输。这种运输机制是 旨在满足以下要求:支持将图文电视数据转换为模拟视频的垂直消隐间隔（VBI）。 转码信号应与现有的电视接收机兼容，并配有图文电视解码器；每个Teletext服务的最大数据速率相当于每个字段16行，因此该服务始终是可用的 适合转码到VBI；传输机制应能够传输字幕，并根据 视频（即达到或接近帧精度）。用于传输新型数据服务的更通用的数据传输机制不在本发明的范围内 文档，但此处指定的传输语法也可以适用于其他数据。

ETSI EN 300 472 specifies the method by which ITU-R System B Teletext (ITU-R Recommendation BT.653 [3]), also known as EBU Teletext (see EN 300 706 [4]), may be carried in DVB bitstreams. This transport mechanism is intended to satisfy the following requirements:to support the transcoding of the Teletext data into the Vertical Blanking Interval (VBI) of analogue video. The transcoded signal should be compatible with existing TV receivers with Teletext decoders;the maximum data rate for each Teletext service is equivalent to 16 lines per field so that the service is always suitable for transcoding into the VBI;the transmission mechanism should be capable of transmitting subtitles with accurate timing with respect to the video (i.e. to within or near frame accuracy).A more general data transport mechanism for conveying new types of data services is outside the scope of the present document, but the transport syntax specified here can also be adapted for other data.