A telecommunications service that allows users to deposit and access information to and from a central data base facility. Access is through a special terminal comprising a TV set equipped with a special decoder.

• 允许用户将信息存入中心数据库（设施）并可从该数据库中取出的一种电信业务。访问是经过特殊终端进行的，这种终端包括一台装有专用解码器的电视机。