The diversified information services based on network occur endlessly, such as the remote education and training, the remote consultation, the shopping by network, netmeeting and so on.
基于网络的各种信息服务层出不穷，例如远程教育和培训、远程会诊、网络商城、网络会议系统等。
The Video Conference can be implemented based on PSTN (Tele-video) or ISDN. However, the Video Conference based IP network has more advantages so that it can be more applied in remote education.
目前，用于远程教学的视频会议主要有桌面可视电话系统和基于ISDN的可视会议系统，但基于IP会议电视系统所具有的优越性，使其在远程教学中有更广阔的应用空间。
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