(The goal of this network system planning is to build a new network system to meet the various new requirements for infrastructure such as data channels and video conferencing, and at the same time to be able to introduce and use the latest technologies conveniently and flexibly. That is: on the one hand, it can get used to the needs of the future conference system and meet the needs of constantly developing and changing affairs; on the other hand, it must be able to take into account the development trend of skills, so that users can quickly and flexibly introduce various leading and practical products in the future. Skill.)