What is network cabling
With the continuous upgrading of network products such as servers and switches, in order to save more space, the size of network products has become smaller and smaller, and the number of network products held by the data center is more and more. Therefore, the network generic cabling technology came into being.It has practicability, flexibility, expansibility and openness. It can meet the requirements of large capacity and high-speed internal transmission of data, image and multimedia information, and can also be connected with external communication network, so as to achieve the characteristics of flexible use, convenient expansion, simple management and easy maintenance.
Generic cabling is a modular and highly flexible information transmission channel within or between buildings. It can not only connect the voice, data, image equipment and switching equipment with other information management systems, but also connect these devices with the outside. It also includes all cables and related connecting parts between the connection point of the external network or telecommunication line of the building and the application system equipment. Generic cabling is composed of components of different series and specifications, including transmission media, relevant connection hardware (such as distribution frame, connector, socket, plug, adapter) and electrical protection equipment. These components can be used to build a variety of subsystems, which have their own specific purposes. They are not only easy to implement, but also can be upgraded smoothly with the change of requirements. The generic cabling system is an open structure, which can support telephone and a variety of computer data systems, as well as meeting television, surveillance television and other systems.
Classification:
The generic cabling system can be divided into six subsystems: working area subsystem; wiring (horizontal) subsystem; trunk (vertical) subsystem; equipment room subsystem; management subsystem; building group subsystem; optical cable transmission system
Fiber-optic transmission system
When the handover hardware of generic cabling system adopts optical cable components, the equipment room can be used as the setting location of main handover field of optical cable. The trunk optical cable extends to other floors from this centralized termination and import and export point, and the optical cables are distributed horizontally in each floor through the optical cable level connection device.
The optical cable transmission system shall use standard unit optical cable connector, which can be terminated in the optical cable handover unit, and the ceramic head connection shall ensure that the attenuation of each connection point is not greater than 0.4db. The attenuation of each connection point of the connector with plastic head shall not be greater than 0.5dB. The generic cabling system should adopt the slowly varying enhanced multimode optical cable with 62.5 μ m fiber diameter and 125 μ m fiber cladding diameter, with the nominal wavelength of 850nm or 1300nm; it can also adopt the single-mode optical cable with the nominal wavelength of 1310nm or 1550nm.
Loose sleeve type or skeleton type optical fiber bundle cable should be adopted for optical cable transmission system, and ribbon optical fiber cable can also be used. In the optical cable transmission system, the hardware handover equipment of the standard optical cable connection device should not only support the connector, but also directly support the bundled optical cable and jumper cable. The general optical cable box shall be used for the connection of various optical cables to provide reliable connection and protective enclosure for the joints of bundled optical cables, ribbon optical cables or jumper cables. The optical cable entrance provided by the general optical cable box shall be able to accommodate multiple building optical cables at the same time.
Advantages of network cabling
According to the current national standards and norms, the advantages of the integrated distribution system are mainly reflected in the following aspects.
1. The overall wiring method is adopted, which can conduct unified wiring for each system, and greatly improve the security and cost performance of computer network generic cabling system.
2. The flexibility and development of generic cabling are the most significant characteristics, which can successfully meet the specific needs of different users and different professions.
3. It effectively reduces the cost of wiring and the difficulty of later maintenance, which is worthy of promotion and application.
What are the types of distribution frame in network generic cabling?
Distribution frame is an intermediate equipment for termination and connection of cables or optical cables. It can be defined as a distribution device suitable for jumper connection and sequencing. Distribution frames are mainly divided into the following two categories:
1. Copper distribution frame
The copper cable distribution frame commonly used in network generic cabling project is mainly twisted pair distribution frame, namely RJ45 standard distribution frame. Copper cable distribution frame can be divided into 110 type distribution frame and modular fast distribution frame (through type distribution frame). 110 type distribution frame is the core part of 110 connection management system. The basic components of 110 type connection management system are distribution frame, connection block, jumper and label. Modular fast distribution frame, also known as cabinet (frame) distribution frame, is a kind of modular and embedded distribution frame, which is characterized by the connection block installed on a printed circuit board (PWB) at the back of the frame.
2. Optical fiber distribution frame
It is divided into optical fiber module and drawer type distribution frame. Optical fiber distribution frame is generally composed of identification part, optical fiber coupler, optical fiber fixing device, fusion unit, etc., which can facilitate the jumping, fixing and protection of optical fiber.
In addition to the above two categories, the distribution frame can also be divided into modular distribution frame and IDC type distribution frame by the cable termination method; the wall mounted or cabinet mounted distribution frame is divided by the installation position; the building distribution frame and floor distribution frame are divided by the location; and the traditional distribution frame and electronic distribution frame are divided according to the management mode.
The function of distribution frame in network generic cabling
1. Distribution frame can facilitate network management, improve management efficiency and reduce network failure.
2. The distribution frame is the most important component in the management subsystem of the generic cabling system. It is the hub to realize the cross connection between the vertical trunk line and the Horizontal Cabling subsystem, and it is the bridge between the network cable and the network equipment.
3. The cable can be replaced by the patch panel.
4. The use of distribution frame can make the workplace, equipment room and other places become clean and orderly, and avoid the disorder of various cables. At the same time, the standard marking and connection make the system administrator clear at a glance in the maintenance and management, which makes the change of network circuit more simple and reduces the labor cost.
Notes on installation of distribution frame in network generic cabling
1. The correct connection mode of distribution frame is: Switch - distribution frame (front) - distribution frame (back) - information socket - user computer. First of all, connect the wire between the front end of the switch and the distribution frame with the wire of the distribution frame.
In the EIA / 682, it is necessary to use the same standard in the EIA / EIA network.
3. Cable management frame is an auxiliary equipment of distribution frame, but it can effectively reduce cable deformation, improve the working stability of network connection point, and avoid network fault caused by cable looseness and deformation.
4. According to the total number of network information points and the distribution of floors, the distribution frame should be configured. When calculating the number, there must be a margin to adapt to the future expansion of the network.
5. In the label of distribution frame, cabinet number, distribution frame port number and other information are generally marked. Therefore, in the same network project, all kinds of coding rules must be unified. It is helpful to determine the location and corresponding function of distribution frame and switch through label in the future use and maintenance.
7. After the termination of the distribution frame is completed, the length of the reserved network cable shall be determined according to the number of the distribution frame, the height and distance of the cabinet, which shall not be too short, so as to ensure that when the network is maintained in the future, once there is a problem with the module termination, the terminated part can be cut off and the reserved cable can be taken nearby for re termination.
8. When dividing and grouping the reserved network cables, and winding them vertically into rings, it is necessary to determine the bending degree of the ring according to the wiring standard, so as to avoid the bending affecting the electrical performance.
HTF's products are customized, the quality is guaranteed, and the accessories are imported.
Contact: support@htfuture.com
Skype :sales5_ 1909，WeChat ：16635025029
