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Comparison of IP Network Intercom System and Analog Intercom System

June 08, 2022
Comparison of IP Network Intercom System and Analog Intercom System
The development of intercom technology towards digitalization requires not only breaking through the bottleneck of technology, but also the bottleneck of its development. In the process of product promotion, engineers should be allowed to recognize this product and understand what value-added effects this system can bring to users. So, what is the difference between IP network intercom system and analog intercom system?
First, the shortcomings of analog intercom system
At present, analog intercom systems use analog technology to transmit audio and video signals, and generally use bus technology to share signals. This technical system has the following main problems:
1. Poor anti-interference ability. Due to interference, there are often no signals or images, and the sound is not clear.
2. The transmission distance is limited, and the analog signal is easily attenuated and distorted. When the distance is long, an amplifier must be added, not to mention the increased cost of networking, and the reducibility of the signal cannot be guaranteed;
3, the use of bus technology is particularly busy, because only two points on the same bus are allowed to talk;
4, single function, in addition to supporting simple information release functions, mainly limited to calls, unlocking and other functions, the device utilization rate is low;
5. Due to technical reasons, product upgrades or expansions have greater limitations;
6. The industry lacks standards and it is difficult to integrate with other weak electronic systems;
7. Large amount of wiring works and high service cost cannot be integrated into the integrated network.
Second, the advantages of IP network intercom system
The IP network intercom system completely uses TCP / IP technology, combined with the current new digital audio and video compression technology, DSP technology, streaming media and network transmission technology. Its main advantages are shown in the following aspects:
1. Simple wiring. Compared with the analog video intercom system of bus system transmission, the IP network intercom system is much more convenient in terms of wiring and installation and debugging. One network cable can solve all problems, greatly simplify the wiring project, make installation and commissioning simple, and shorten the construction period.
2. Powerful networking. When all signals are digitized, it is easy to meet networking needs.
3. Good scalability and powerful functions. IP networking is highly scalable.
4. Long transmission distance. The IP network intercom system based on TCP / IP mode has no distance limitation and can realize low-cost long-distance transmission.
5. The overall cost is low. For a long time, there is a fixed concept in people's minds: "New technology means high prices, and new products must be more expensive than traditional products." Then, the IP network intercom system that is the first technology to be used Is it more expensive and more expensive than the traditional analog intercom system? In fact, from the perspective of installation, commissioning and wiring, the use of TCP / IP transmission mode should reduce a lot of investment. At the same time, the construction period is shortened, saving personnel costs, reducing wire and labor costs, and bringing value-added services and easy maintenance.
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