category
project
Analog intercom
Digital intercom
General
Read
A communication mode that modulates voice, signaling, and signal to the carrier frequency of the intercom in a continuous wave mode and performs optimization processing such as amplification.
It digitizes voice and video signals, adopts a specific digital coding method and a specific form of baseband modulation, and uses a digital signal processor for optimized data communication mode.
Skill
Technique
Adopt technology
Adopt bus technology to share signal transmission line
Using TCP / IP technology, combined with current digital audio and video compression technology, DSP technology, streaming media and IPV6 network transmission technology to achieve
Whether there is a busy
Adopting bus technology only supports point-to-point, and the occupation rate is extremely high
Multipoint to multipoint in TCP / IP network, no busy problem
Transmission distance
The distance is limited, the analog signal is easy to be attenuated and distorted, and an additional amplifier is needed at a long distance
The visual intercom system based on TCP / IP has no distance limitation, digital signals are not easily distorted, and low-cost long-distance transmission can be achieved.
Wiring method
The amount of engineering is large, the cost of service is high, and the closed wiring cannot be integrated into the comprehensive network of the community.
The system uses TCP / IP to transmit signals such as sound, data, and video images. Therefore, a single network cable can solve all problems.
Anti-interference ability
Poor resistance, resulting in unclear signal or image sound. The cost of using optical fiber is high.
Optical signal transmission, strong anti-interference, and low cost. Undisturbed
Sex
can
Make
use
Sex
Single function, in addition to supporting simple information release functions, mainly for calling, unlocking and other functions, the device utilization rate is low
In addition to the simulation function, it can also realize household calls, photo message, security alarm, emergency call, home appliance control, remote home appliance control, information reporting, do not disturb service, call transfer mobile phone, VOIP, elevator control, and DIY personalized settings.
Scalability
Due to technical reasons, product upgrades or expansion have greater limitations
IP networking can not only realize visual intercom, but also realize multimedia information sending, broadcasting, security alarm, smart home, and value-added services. If you access the Internet, you can configure and remotely upgrade any terminal (visual intercom) on the Internet. It can not only meet traditional video intercom applications, but also provide security alarms, smart home control and other functions, and become the core hub of the "digital home".
Standard uniformity
Poor compatibility, products of different manufacturers cannot be interconnected, and it is difficult to integrate with other weak electronic systems;
Good compatibility, network cable digital interface.
Construction cost
Pipeline construction cost
The system is complex and the number of pipes is large
All-digital solution, based on network integrated wiring sharing computer network
Cost of connected equipment
Most of the projects are developed in phases, and the subsystems are independent of each other. Due to the complex composition of the traditional video intercom product system, it transmits data by analog, and is limited by the transmission distance. It requires decoders, isolators, network switches, amplifiers and other interlayer equipment, and the system wiring works are large. In addition, it also needs to use multiple wires such as video cables and signal cables, and each independent network has fallen into a situation where it is not compatible with other networks.
The digital intercom system uses a broadband network based on telecommunications as the transmission basis, and is not limited by distance. Therefore, projects with multiple phases of development do not require multiple computer rooms, only one. Moreover, the digital video intercom system has no requirements on the location of the computer room, and can be placed anywhere with low commercial value.
Maintenance and management costs
Due to the complex networking mode of the system, professionals need to use professional tools for networking, multiple partitions, and large service volume. If there is a problem with the line, it is difficult to find the cause.
Full digital system, most of which can be remotely maintained. After installing the digital intercom system, developers (property management) or engineering companies can also charge for advertising and other value-added service fees (such as community shopping, information promotion, etc.) to increase additional revenue
Improving the image of real estate developers
Rarely, intercom is basically a must for newly developed communities.
Building real estate into a digital intelligent community, enhancing brand value and increasing customer awareness.
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