1, simple wiring: Because the digital visual intercom system uses TCP/IP to transmit sound, data, images and other signals, a network cable can solve all problems, greatly simplifying the wiring project, making the installation and debugging of the residential intercom system simple and greatly shortening the construction period. 2. Powerful networking function. 3. The indoor unit of digital visual intercom system is like a small computer, which has both high-performance CPU and DSP digital processing chip. The powerful data processing ability makes the networking function more powerful, and also provides more convenience for the integration of other security subsystems. VCOM- Weikang Education, 4. Strong expansibility: Digital visual intercom system can not only realize visual intercom, but also realize multimedia information sending, broadcasting, security alarm, smart home, IP videophone, VOD on demand, image monitoring, value-added services and other functions, which also plays a certain role in security monitoring. 5. Low cost: TCP/IP transmission mode is adopted in the process of installation, debugging and wiring of digital visual intercom system, which can reduce a lot of investment. In addition, it shortens the construction period, saves the cost of wires and labor, and is easy to maintain, so it is even more advantageous than the traditional analog intercom system in cost.