现在有三种形式的远程会议:1)现象会议:参加会议者都能在电视屏幕上互相看到对方的形象;2)传声会议:向会议参加者提供说话和电传通道(用电传通道传递文件副本);3)电子(计算机)会议:使用电子计算机贮存、加工及传送讲话内容。用户和系统是按下列图式进行对话:1)用户在终端和系统联系,得到系统回答后给出自己的姓名和代号;2)和系统建立联系后,用户可以要求给出正在使用 There are now three forms of teleconferencing: 1) Phenomenon Conferences: Each participant can see each other’s image on the television screen; 2) Acoustic conference: provide speaking and telex access to meeting participants Transfer of copies of documents); 3) electronic (computer) meeting: the use of electronic computer storage, processing and delivery of speech. User and system are in accordance with the following diagram of the dialogue: 1) The user terminal and the system to contact, get the system to answer their names and code given; 2) and the system to establish contact, the user can request is being used