4 key issues to be noted when network cabling

Structured and systematic network cabling enables unit users and individual users to take full advantage of rapidly evolving technologies that can have a substantial impact on all systems in any device.

One: Improve the understanding of the importance of network wiring

Only to fully understand the importance of network cabling, we can in the actual network wiring process, so that network cable layout more systematic, standardized and rationalized. Structured and systematic network cabling enables unit users and individual users to take full advantage of rapidly evolving technologies that can have a substantial impact on all systems in any device. The systematic layout of network lines, because of the use of common standard edge system factors, this can be very convenient and fast communication equipment installation, commissioning, replacement and maintenance, so that users of this investment can achieve a more satisfactory efficiency returns.

Through the system layout of network cable, not only can ensure the flexibility and scalability of networks and future upgrades, but also can be faced with the system maintenance workload and the cost of system maintenance, as far as possible to control at the minimum. The system layout of network line can be regarded as a platform for the whole network communication system to construct a good engineering performance. The use of this platform for the entire building or the entire communication system network communication has great flexibility and versatility, but also has a very good performance price ratio, for example, according to the author's network wiring Experience statistics, Cabling the entire floor or the entire building can reduce the network communications maintenance staff to half the original. Because the systematic and structured network wiring system is a star-shaped physical structure with multiple functions, it can be applied to the network system with different topology. Just make some wiring changes on the right node without moving cables and equipment. Therefore, once the network system changes, to rationalize the layout of the cable can reflect its own advantages.

Second: Network wiring needs of the network products should be the same manufacturer

Due to network wiring used in the network products, such as ordinary 5 twisted pair or crystal first is the transmission of the weak signal, a little careless all may affect the overall performance of network communications. At present, there are many kinds of network products in the market, some manufacturers of network line quality may be better, some manufacturers may produce crystal head use effect is more obvious, but also some manufacturers to produce the network interface module cost-effective is the highest, in order to be able to all the advantages of these products are concentrated, Many network cabling people often simply think that if these network products combined to a system for network cabling, it may make the signal attenuation amplitude of network communication to the minimum, so as to achieve the best communication effect. In fact, this understanding is not correct, once these different manufacturers of high-performance products integrated in a system to use, not only can not achieve the communication effect we imagine, but the communication effect will become worse.

Because the impedance of the internal material of the network products of different manufacturers is not the same, the subtle differences in the impedance may have a great influence on the signal attenuation of the high speed communication network, thus affecting the communication quality of the whole network communications system. Perhaps some people say, they are in the network wiring is the use of different manufacturers of network products, as if the speed did not significantly reduce it? In fact, a system using different network products, 10M below the impact of the speed of network exchange is really small, sometimes can not be compared by hand, But if 100M or more high-speed network systems use different network products to network cabling, the final exchange speed of the network will be significantly changed. Therefore, I suggest that regardless of which network system for network cabling, we would be best to use the same manufacturer of the network products, so there may be the manufacturers to provide us with the quality of communication for about 15 years.

Due to the network cabling to consider the integrity and system, so this requires us in the wiring before, should be careful, seriously, do a full investigation, collect related network wiring information, such as the need for network wiring of the building design drawings, wiring needs to consider the matter and details, At the same time, the construction schedule, application demand and economic conditions of the network wiring should be considered comprehensively.

If the building is still in the construction of the network wiring, wiring should be based on the building's architectural requirements, the building of the network wiring, the specific needs of the line to carry out the implementation of, for example, the upper and lower floors between the line of the channel specifications, embedded some pipelines and so on. These requirements can be reflected in the design of the building, so that at the same time the construction of some network wiring in the prophase of the project completed, to remove many of the late construction of the drawbacks, reduce duplication of work, improve work efficiency, so reasonable and easy to do. If it is built on the basis of the building and interior decoration project synchronized with the integrated wiring, it should be based on the actual observation and analysis of the existing building materials and decoration design of the integrated wiring.

Third: Do not use the network line

Many designers in the layout of network lines, in order to save investment costs, a network cable is often used to connect devices at the same time, for example, it is possible that they would split a pair of wires from the twisted pair to connect to the phone, or they could connect two pairs of wires to two network interface modules, which would seem to improve the utilization of the network line. In fact, this first-line multi-use approach to the efficiency of the network communication is very large, for example, if you want to use the network line more, you have to untie the cables that are twisted around each other, so that the twisted pair will break, and the near-end string of twisted pairs will become larger, The numerical increase of the near-end string has a great influence on the transmission and exchange speed of the network line; Moreover, as the speed of network Exchange is constantly upgraded, the Gigabit Speed switch network is also gradually popularized, and gigabit network using Full-duplex transmission exchange, this way will be a network line contains 8 of the cable all use, So from this point of view, the network line to do a lot of use is not conducive to the entire network system in the future upgrade.

Four: To strictly network wiring construction quality

When a large building or communication network system is routed, relying on the strength of computer technicians is not enough, many units are invited to build construction personnel to participate in the entire network cabling system projects, and these constructors most of the network or computer knowledge ignorant, they often put the network wiring and telephone lines , wires and other lines are confused, therefore, these workers in the specific network wiring, will not consider the various details of network wiring, such as network lines and interface between the link between the connection module, cable and Crystal head of the connections between the wire and the network cable stranded and other details, if these construction workers are not strict construction quality, Without paying attention to these details, it will have a great impact on the transmission performance of the network line.

And for users, they detect the network layout of the only means of good or bad, is in the entire network wiring completion, simply use the Network detection command "ping" to see the network connectivity, as long as the network of ping-lan words that the entire network wiring work qualified. In fact, after the network wiring is completed, not simply to test the network connectivity is so simple, you also need to see whether the network transmission speed to reach the nominal value of the network products, a poor construction quality network wiring will be in the transmission speed greatly discounted.

In addition, we must pay attention to the layout of the network cable system for all-round testing, for example, first of all through the network cable tester to see the net line of the 8 cable connection sequence and test is connected, this test for ordinary users can also be very convenient, as long as the purchase of a set of detectors can be, for large, When testing a system network with high transmission requirements, it is also necessary to check the overall signal loss of the point-to-point connection through a dedicated test. If the loss signal is too large, then the construction quality is certainly not clearance, in addition to the cable line of the near-end crosstalk numerical test, we must test all the line pairs between the near-end crosstalk, The worst line pair combination must meet the minimum performance index requirement, in order to guarantee the most basic guarantee of network system operation.

In testing the network cable, we also have to do a good job marking work, the number of points at the information points and wiring racks marked with labels and on the floor plan, so that the system for future management, use and maintenance. General acceptance is found at both ends of the problem, this may be the wiring racks did not do a good job, may also be the module is not done, there is a possibility is the top board when the screws into the network cable caused by short-circuit phenomenon, and so on. After the complete marking and detection of the network system, we should rearrange the cable plan and make the correct mark on it for future maintenance.