In the 21st century, the IT industry has no longer looked for technologies to replace Ethernet, but instead looked for ways to enhance the functions of Ethernet and expand to new areas. The function of modern Ethernet networking has greatly exceeded the basic Ethernet function.

TCP/IP and Ethernet are a strong combination of openness, and gradually penetrate into all aspects of the field of building intelligence, giving intelligent buildings strong vitality. In the field of intelligent buildings, TCP/IP Ethernet is not only a network platform for information service/management/monitoring, but also a supporting platform for video/voice applications.

With the acceleration of the digital process of security, some products that directly use standard twisted pair and dedicated Ethernet to form some security subsystems have appeared in the market. Especially for the video monitoring system, due to the mature application of digital cameras, the video monitoring system based on TCP/IP Etherwind is increasingly favored by users; Access control, visual intercom and other products using standard twisted pair have appeared, and there is no problem in terms of technology to directly use Ethernet to form these systems. Ethernet based multi system integration, structure optimization, reliable, integrated security system has become increasingly mature.

Building automation system and DDCs are network transmission systems, and the upper management is also moving towards TCP/IP protocol. It is no longer an individual case that the industrial control Ethernet is used in the field control network of electromechanical equipment monitoring system in intelligent buildings.

The communication content includes voice communication, data communication and image communication. In the residential area, TCP/IP Ethernet is used to connect the intelligent home controller, which not only has mature technology and numerous products, but also optimizes the structure of the intelligent system of the residential area, which is conducive to maintenance and management.

Due to the rapid development of IT, generic cabling technology and products not only support data and voice, but also more and more products support video. The digitalization of TV transmission system will change the copper axis cable transmission line into twisted pair transmission line. The integrated system based on TCP/IP enables the use of standard twisted pairs and optical cables to support almost most information flows in intelligent buildings, laying the foundation for further comprehensive use of Ethernet. It also requires that the generic cabling connected by the physical layer be further accelerated to create application conditions.