How to buy Integrated Wiring Products

We need to pay special attention to the selection of Integrated Wiring products. Here I will introduce you to some of this knowledge, including how to buy a twisted pair Integrated Wiring product and identify the quality of twisted pair wires, hope to help you.

1. How to purchase twisted pair cabling Products
Twisted Pair TP: Twisted Pairwire) is the most common transmission medium in integrated wiring engineering. Twisted Pair wires are composed of two copper wires with an insulating protective layer. The two insulated copper wires are twisted together at a certain density to reduce signal interference, the electric waves emitted by each wire during transmission are offset by the electric waves sent from the other wire.

Twisted Pair wires generally consist of 22 ~ The No. 26 insulated copper wires are wound together. If one or more pairs of twisted pair wires are placed in an Insulating Sleeve tube, the twisted pair cables are formed. In a twisted pair cable, also known as a twisted pair cable), different pairs have different twist lengths. Generally speaking, the twist length is within 1cm to 14cm, and is twisted in the clockwise direction, the twist length of the adjacent line is above 7cm. Compared with other transmission media, twisted pair wires are limited in terms of transmission distance, channel width, and data transmission speed, but the price is relatively low.

Classification of twisted pair wires
Currently, Twisted Pair wires can be divided into unshielded Twisted Pair UTP: Unshilded Twisted Pair) and Shielded Twisted Pair STP: Shielded Twisted Pair ).

1. shielded twisted pair wires
The shielded Twisted Pair wires are divided into two types, namely STPShielded Twicted-Pair) and FTPFoil Twisted-Pair ).

STP means that each line has its own shielded twisted pair wires, while FTP adopts the overall shielded twisted pair wires. Note that the shielding only works on the entire cable, it works only when the two ends are correctly grounded. Therefore, the entire system is required to be completely shielded, including cables, sockets, crystal heads and distribution frames. At the same time, the building must have a good ground system. The outer layer of the shielded twisted pair cable is wrapped in aluminum pods to reduce the radiation, but the radiation cannot be completely eliminated. The price of shielded twisted pair cables is relatively high, and installation is more difficult than that of unshielded twisted pair cables. Similar to a coaxial cable, it must be equipped with a special connector that supports shielding and corresponding installation technology. However, it has a high transmission rate, which can reach 100 Mbps within 155.

2. unshielded twisted pair wires
The unshielded twisted pair Cable consists of multiple pairs of twisted pair wires and a plastic outer skin. The International Institute of Electrical Industry defines five different quality levels for twisted pair cables.

In computer networks, category 3 and Category 5, Category 5, and category 6 unshielded twisted pair cables are commonly used. The third type of twisted pair wires are suitable for most local computer networks, while the fifth and sixth types of twisted pair wires greatly improve the nature of transmission media by increasing the winding density and high-quality photo materials.

Cat5e unshielded twisted pair wires
The cat5e unshielded twisted pair cable is a cable that improves the performance of the cat5e unshielded twisted pair cable. Many performance parameters, such as near-end crosstalk, attenuation crosstalk ratio, and ripple loss, have been improved, however, the transmission bandwidth is still 100 MHz.

Cat5e twisted pair wires use four bypass pairs and one anti-tension cable. The color of the wire pair is identical to that of cat5e twisted pair wires, they are white orange, orange, white green, green, white blue, blue, white Brown, and brown. Bare copper wire with a diameter of 51mm and a line gauge of 24AWG), insulating wire with a diameter of 0.92 and UTP with a diameter of 5mm.

Although cat5e unshielded twisted pair wires can provide transmission bandwidth of up to 1000 Mb/s, they often need to be supported by expensive special devices. Therefore, it is usually used only for 100 Mbit/s fast Ethernet to connect a desktop switch to a computer. If you do not need to upgrade the network to Gigabit Ethernet, you may wish to use cat5e unshielded twisted pair wires in horizontal wiring.

Cat6 unshielded twisted pair wires
The parameters of cat6 unshielded twisted pair have been greatly increased, and the bandwidth has been extended to MHz or higher. The shape and structure of cat6 twisted pair wires are different from those of cat5 or cat5, which not only increases the insulating cross skeleton, place the four pairs of twisted pair wires in the Four troughs of the Cross skeleton, and the diameter of the cable is also thicker.

The cross skeleton in the center of the cable rotates with the length change. Four pairs of twisted pair wires are stuck in the groove of the skeleton to maintain the relative position of the four pairs of twisted pair wires, increase the balance and Crosstalk attenuation of cables. In addition, ensure that the balanced cable structure is not damaged during installation. Cat6 unshielded twisted pair wires with a bare copper wire diameter of 57mm wire gauge of 23AWG), insulation wire diameter of 1.02mm, UTP cable diameter of 6.53mm.

Cat5e or cat6
According to different electrical properties, twisted pair wires can be divided into three categories, five categories, cat5e, six categories and seven types of twisted pair wires. The prices of twisted pair wires of different categories vary greatly or even greatly, and their application scope is also quite different.

In addition to the traditional speech system still using three types of twisted pair wires, generic cabling products are basically using cat5e or cat6 unshielded twisted pair wires. Although cat5e unshielded twisted pair wires can still support 1000Base-T, the price of cat5e unshielded twisted pair wires is almost the same as that of cat5e unshielded twisted pair wires. Therefore, the Integrated Wiring product market has gradually faded out.

Although the price of cat6 unshielded twisted pair wires is high, because of its excellent compatibility with cat5e cabling systems and its excellent support for 1000Base-T, cat6 unshielded twisted pair wires are gradually becoming a new favorite of Integrated cabling products. As a brand new cabling system, the seven-class shielded twisted pair wires provide excellent performance but are expensive. The construction is complex and few products are available, so it is rarely used in cabling projects.

Cat6 unshielded twisted pair wires provide excellent support for Gigabit Ethernet and M transmission distance. As a result, cat6 cabling systems are widely used in the cabling of sub-server data centers and retain horizontal cabling that is upgraded to Gigabit Ethernet. According to the International cabling standard ISO 11801, the expected life of the cabling system is at least 10 years. As a long-term basic investment, the potential requirements of the network and the development of the cabling system should be fully considered. Therefore, we recommend that you select six types of products to build the cabling system with the funds allowed.

If you consider future network application requirements, you should theoretically install the most advanced Integrated Wiring product, because it is often difficult to update and replace the cables after installation. Basically, A cabling system must be used for at least 10 years as a standard to support performance updates for Generation 4 to 5 network devices. If a network device needs better cables in the future, the data speed will be improved. It is inevitable to replace cat5e with cat6 cables, but the re-construction of these cables is very expensive, so even if the price of cat6 products is slightly higher than that of cat5e products, however, in order to reduce the problem of network upgrade in the future, the six categories of Integrated Wiring products are still worth considering.

Quality Identification of twisted pair wires
The quality of twisted pair wires is one of the key factors determining LAN bandwidth. Only the standard cat5e or cat6 twisted pair wires can reach a transmission rate of 100-1000 Mbps; poor twisted pair wires cannot meet high-speed transmission requirements.

The constructed network has a high requirement on data transmission rate, such as a large network). It is recommended that you directly purchase the network from a special dealer or agent of the famous brand Integrated Wiring product. Although the price may be more expensive, however, the quality is guaranteed. Therefore, selecting a high-quality network cable is particularly important, especially in the Integrated Wiring project.

1. View
Check the packing box texture and printing ---- carefully check the box of the cable and check whether the packing is complete. Many manufacturers have also attached anti-counterfeit labels on the outer packaging of Integrated Wiring products.

Look at the outer skin color and logo ---- the words such as manufacturer's place of origin, implementation standard, Integrated Wiring product category such as CAT5e, C6T, etc. should be printed on the twisted pair insulation skin. The most common unpu cat5e or cat5e twisted pair wires are in dark gray with shiny outer skins.

View twisting density-if the cable has the same twisting density, the cable's twisting density does not meet the technical requirements, or the cable's twisting direction does not meet the requirements, can be determined as a pseudo product.

Look at the wire color ---- the white and orange lines are wound together, and the white and green lines are wound together, it is a white-blue line wound with a blue line, and a white-brown line wound with a brown line. It should be noted that these colors are definitely made of plastic instead of dyes.

Look at the flame retardant situation ---- the outer layer of the twisted pair wires should not only have good tensile properties, but also have fire resistance. To determine whether the cables are flame retardant, the simplest way is to use the fire. The line without flame retardant is definitely not genuine.

2. Wen
Smell cable-genuine twisted pair wires should have no smell, while inferior twisted pair wires have a plastic taste.
Smell-ignition twisted pair outer skin, genuine line using polyethylene, should be basically tasteless; and inferior line using polyvinyl chloride, the taste pungent.

3. Question
Ask the price ---- the price of real goods is more expensive, while that of fake goods is cheaper. Generally, the price of real goods is about half the price.
Q & A-ask about the source of the network cable and request to view its purchase credential and documents.
Q: Quality Assurance-the network cables of regular manufacturers all have corresponding technical parameters and provide comprehensive quality assurance.

4. Try
Try to feel ---- the real line feels comfortable, the outer skin is smooth, pinch a line, the feeling should be full.
Try bending-cables should also be bent at will to facilitate the purchase of Integrated Wiring products.

I believe that through the above introduction, network administrators have a deep understanding of twisted pair wires and hope that these contents will help network administrators in the process of actually using twisted pair wires.

A vswitch is a network device that can encapsulate and forward data packets based on MAC Nic hardware addresses. The switch can "Learn" the MAC address and store it in the internal address table. By creating a temporary exchange path between the initiator of the data frame and the Target receiver, the data frame can directly reach the destination address from the source address.

A vswitch can transmit data between multiple port pairs at the same time. Each port can be considered as an independent network segment, and the network devices connected to it enjoy all the bandwidth alone, so they do not need to compete with other devices. As the main connection device of the LAN, the Ethernet switch is one of the fastest-growing network devices. With the continuous development of switching technology, the price of Ethernet switches decreases sharply, and switching to the desktop is the trend of the times.

Vswitch classification and functions
In a broad sense, there are two types of switches: WAN switches and LAN switches; the transmission media and transmission speed can be divided into Ethernet switches, Fast Ethernet switches, Gigabit Ethernet switches, FDDI switches, ATM switches, and wildcard ring switches. Large-scale applications can be divided into enterprise-level switches, department-level switches, and working group switches.

Generally, enterprise-level switches are rack-mounted and department-level switches can be rack-mounted or fixed-configuration switches, the workgroup-level switch is a fixed configuration (simple function ).

On the other hand, from the perspective of application scale, enterprise-level switches support large enterprise applications with more than 500 information points as enterprise-level switches, and department-level switches support Switches of medium enterprises with less than 300 information points, switches that support less than 100 information points are working group-level switches.

The main functions of a vswitch include physical addressing, network topology, error verification, frame sequence, and traffic control. At present, the switch also has some new functions, such as support for VLAN (Virtual LAN), support for Link aggregation, and even some also have firewall functions.

Next we will discuss with you how to buy common working group switches, backbone switches, and core switches. In addition, we should pay attention to the considerations when purchasing network management switches.

Core switch Selection
The core switch adopts a modular structure to adapt to complex network environments and network applications. Ultra-high-capacity backboard bandwidth and line-rate forwarding can effectively ensure data non-blocking transmission. It provides powerful network management functions to implement inter-VLAN communication, priority queue service, and network security control. At the same time, the hardware redundancy and software scalability of the core switch also ensure the reliable operation of the network.

1. Integrated Wiring System makes campus more intelligent
2. Detailed discussion on campus integrated network cabling implementation specifications
3. Detailed analysis on requirements of the Integrated Wiring System
4. Discuss how to optimize smart network cabling Solutions
5. Brief Introduction to the smart Integrated Wiring System