At present, some manufacturers on the market act against their conscience and use half-analog and half-digital products as digital products. When the personnel in the weak current department of small engineering companies or developers are not professional enough, it is easy to let half-analog and half-digital building intercom products act as digital products and sell them at high prices to demanding users. The following editor will briefly introduce how to distinguish semi-analog Semi-digital products and purely digital products.

distinguish a
Although the current analog video intercom wiring methods on the market all have the original complex wiring method converted to a one-line system (ie, super five network cables), the wiring method of pure digital video intercom is also a one-line system (ie, super five types of network cables) , to a large extent, the demander has caused such a mentality: the system using the network cable is a digital system.
Distinguish two
There is no black and white video intercom and color video intercom in the pure digital video intercom system. As long as it is a pure digital video intercom system, it is a color video intercom. Some unscrupulous manufacturers use the first-line color video intercom system to confuse unsuspecting demanders. If the manufacturer tells you whether you need digital black and white video intercom or digital color video intercom. congratulations! Don't look down. When the manufacturer tells you this, you should know that it is an analog product.
Distinguish three
The pure digital video intercom is a product that follows the TCP/IP protocol, and the intermediate switching equipment only needs an ordinary network switch (all streets and alleys are available for sale). The switch and the networking controller combine into the same shell as the network switch to fool customers. Whether the demander can buy the network switch by himself, if the manufacturer answers: when they must use their dedicated network switch, congratulations! The simulation products that have approved the outerwear are beckoning to you. If the answer given by the manufacturer is: wherever the demander buys the network switch, as long as the quality of the switch is guaranteed.
Distinguish four
Each machine in the pure digital intercom system has an IP address bar, a port, and a MAC address. A half-analog, half-digital system cannot do this. If the manufacturer says: the indoor unit IP can be set arbitrarily, as long as it is in the same network segment, congratulations! The digital product you were looking for has been found.
For now, digital video intercom is in a period of accelerated development both in the market and in technology, and is increasingly becoming an important role in the digital home. Its own three major elements: video compression, voice processing, network transmission, make digital video intercom and other home multimedia products integrated with each other. Due to the increasing demand for digital products in the market, digital video intercom has become the general trend. Many manufacturers have also seen the advantages of digital video intercom products and want to take this "gold rush train". Domestic intercom manufacturers also focused their attention on this earlier. Some manufacturers have already produced and sold digital video intercom products, while some manufacturers are still in the research and development stage. As a result, the market of digital video intercom products is relatively mixed, and half-digital and fake digital products are also full of them, which makes digital video intercom products greatly discounted in the minds of users, and they still take a wait-and-see attitude. So, how to distinguish the true and false of the digital visual system? Mainly from the following points to distinguish:
1. First of all, it is necessary to investigate whether the standard TCP/IP protocol is adopted, and whether the transmitted audio and video signals are digital signals after encoding and compression processing.
2. Check whether the intermediate equipment and networking equipment are common. At present, some use dedicated switches, and some rename the switches as switches, etc., which need to be distinguished. Generally speaking, the real networked intermediate equipment can be purchased directly from the market. If it can only be purchased from the intercom system supplier, it is definitely not a real digital product. The real digital product is standard and general.
3. Look at the interface. When purchasing products, we should carefully observe the interfaces of the door station, central management station, indoor station and wall station to see if the RJ-45 interface is used. If it is not the RJ-45 standard interface, it is definitely not a digital intercom device.