Discuss in detail the practical application of the integrated network cabling system

There are many areas worth learning about in the integrated network cabling system. Here we will mainly introduce the problems related to the gigabit network and cat6 cabling, including how to make proper cabling for the gigabit network, I believe that with the continuous development of information technology, people's needs will be higher, and various wiring technologies will exert their expertise.

As we all know, Ethernet technology is closely related to the technology of integrated network cabling systems. How does the technology develop to support the next generation of cables, especially the six types of cables in the protocol?

Do I need six types of cabling for a gigabit network?

At present, there is a lot of debate on the need for cat6 cabling in the network Integrated Wiring System Industry. Remember that when three types of cabling were prevalent in 1992 and the five types of integrated wiring systems were just proposed, 10 Mbps is developed on the basis of three types of cabling for Ethernet (10Base-T) and 25MbpsATM networks. When the bit rate of Ethernet is increased to 100 Mbps and the atm lan is increased to 155.5Mbps, electronic devices have to increase their complexity and cost to support these LAN technologies based on three types of cabling. 100Base-T4, 100Base-T2, and 155.5MbpsCAP64ATM LAN require the use of complex DSP technology to overcome the limitations of three types of wiring. With the adoption of the five-category integrated network cabling system by many end users, the cheap 100 Mbps (100Base-TX) Ethernet and 155.5MbpsNRZATM LAN have also been developed and improved performance has been achieved based on the Five-category cabling.

The actual situation shows that the total cost for each user to connect (for example, from the router to the NIC, including the cable) When 246 base-t4 is run using three types of wiring is USD, the cost of 198 BASE-TX is only USD 24% on the basis of the five-category cabling. In contrast, the average connection cost per user is reduced.

There is no doubt that the same development will happen again in the 1000Base-T LAN technology. Because 1000Base-TX is designed to work in two-to-one and two-to-receive ways, therefore, Echo Cancellation in full duplex mode is not required. To reduce the time to market, the MLT-3 encoding method used by 100Base-TX will be selected, and the bandwidth efficiency of the MLT-3 is 4 bits per Hz, so the bandwidth is 125 MHz. This well limits the cat6 cabling to the NEXT and PSNEXT ranges, so crosstalk cancellation is unnecessary. From the perspective of current semiconductor technology, the absence of ECHO and Crosstalk cancellation devices will reduce at least 50% of the overall complexity of the 1000Base-TX design (compared with the current 1000Base-T design ).

By extension, if the data ratio increases from 600 Mbps to Mbps per pair, this design can be used in a Gbps system. Therefore, cat6 cabling not only reduces the cost of electronic devices that support Gigabit Ethernet, but also provides basic facilities for LAN technologies that may exceed 1 Gbps in the future.

The investment in cabling infrastructure will be considered a long-term investment, and cabling facilities should also be considered as an asset. According to the International cabling standard ISO11801, the expected life of a cabling system is at least 10 years. During this period, PC technology will be greatly improved. For the moment, although the desktop system does not need to use 1 Gbps, it is mainly caused by the limitation of the current PC internal bus structure, because the bus determines the data exchange rate between the processor, memory, and other peripheral devices (such as NICS. The famous Moore's law predicts that the number of transistors on a chip doubles every 18 months. This is often used to describe the growth rate of PC Processor performance. That is to say, the performance of PCs is doubled every 18 months. So far, it is very likely that 1000Base-TX technology will be applied to the desktop system during the lifecycle of the cabling system.

How to route Gigabit Networks

The complete design of the integrated network cabling system is the foundation to ensure the success of the system. The design personnel must fully understand the requirements of end users for users' computer networks and business applications, plan the overall framework of the integrated network cabling system to design a diagram of the integrated network cabling system that reflects users' actual needs. In the architectural design, the direction and space of the pipe slot of the network Integrated Wiring System, the location of the Weak Current well and the weak current room must be taken into account. The design of the weak current system should leave sufficient positions and space for the computer master room and telephone switch room, the number and distribution of information points of each business department should be discussed and determined with the end user as soon as possible.

In addition, the network integrated wiring system design should be based on the computer network transmission rate, bandwidth and application software requirements, according to international and European Integrated Wiring System Standards for network Integrated Wiring System products (cables, connectors) the requirements on the security and confidentiality of the network cabling system should also be taken into account in the user environment, and whether flame retardant, non-toxic and shielded products should be used. Currently, most network cabling systems use products of well-known European and American cabling brands. The selection of network cabling system products should mainly consider whether the cabling products meet international and European Integrated cabling system standards and meet the requirements of computer networks and business applications for network integrated cabling systems. Users and designers can inspect and inspect products and suppliers as needed.

The implementation of the network integrated wiring system is the key to implementing the system design requirements. At the same time, during the implementation of the user's construction project and the weak current system, the construction of the network Integrated Wiring System is the earliest, the last day, the most coordination and cooperation with the construction, strong electricity and other weak current systems. Therefore, the construction team of the network integrated wiring system must have the corresponding construction qualifications, construction personnel should have good quality. At the same time, project management personnel must plan, supervise and guide all aspects of the network integrated wiring system construction to ensure that the Network integrated wiring system is completed on time and in accordance with the design requirements with high quality.

In project management, pay attention to the following situations frequently encountered in the project: First, check whether the network integrated wiring system design drawings, building installation drawings and decoration drawings are consistent, if the design drawings cannot be updated to the system in a timely manner, coordination problems of the system will occur, resulting in engineering rework, increasing costs and delaying the construction period. Secondly, whether the design change affects the project progress and cost budget is inevitable in any project. However, you must be careful when proposing the change and follow the regular processing procedures. At the same time, the progress coordination of various systems, on-site coordination and product arrival, storage and on-site system protection issues cannot be ignored.

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