After years of teaching reform and experience, it has been taught that synchronous classrooms are the only way for us to solve the imbalance of educational resources, and the core of synchronous classrooms is real-time interaction of teaching. However, this is precisely a problem that many manufacturers are currently unable to solve. So they used another system, the video conferencing system.

The video conferencing system I am referring to here is not a software based video conferencing system, but a pure hardware video conferencing system. Hardware video conferencing systems have higher smoothness, security, and stability compared to software video conferencing systems, high fidelity sound quality effects, and the ability to synchronize with videos, making them more interactive. Moreover, their latency is only a few millimeters. The special equipment of the terminal carries out real-time compression coding for the voice and picture collected on site, and connects with the core MCU (central control unit) of the video conference through the Internet. After receiving signals from various points, the MCU forwards audio and video signals. Moreover, we use communication protocols to interact. Its mechanism and starting point are all based on the Internet, which is also a standard in the field of global audio and video communication. Under this standard, the video conference system can be more stable and smooth. Of course, when building a video conferencing system, we need to determine the configuration of terminal products based on the number of points attended by the other party and the size of the conference room. The more points used, the larger the conference room, and the higher the requirements for the configured terminal products, and the higher the network bandwidth occupied. Of course, it will also bring higher costs. However, this video conferencing system not only meets the requirements of automatic teaching within schools, but also enables interactive learning with different schools outside of school. More importantly, it allows for audio and video interaction, achieving truly synchronized classrooms. The reason why we need to build synchronous remote learning schools now is because of the current emphasis on teaching in society and the imbalance in teaching levels in remote areas. In order to better promote learning in various places, building a video conference system is currently the best way to balance learning resources by building synchronous schools.