ETSI ETS 300 834-1998 终端设备(TE).窄带网(PSTN或ISDN).无数据设备的交互视听检索业务的接入.ISDN或PSTN可视电话终端至视听数据库的接入
Terminal Equipment (TE); Narrowband Networks (PSTN or ISDN); Access to Interactive Audio-Visual Retrieval Services without Datafacility; Access for ISDN or PSTN Videophony Terminals to Audio-Visual Databases