Structured Cabling System and Its Application

In the network era, the high-speed, secure and reliable information transmission and computer network communication between any point have higher requirements on the information transmission media and structure. How to adapt to the current and future rapid development of network technology on the challenge of building wiring is the subject we need to seriously consider at the beginning of the office building design and construction. Generally, the life cycle of an office building is much longer than that of computer, communication, and network technologies. Therefore, the communication facilities and cabling systems used in office buildings must be advanced, strive for high standards, and have strong adaptability, scalability, reliability and long-term benefits to meet future needs.
The ingress on cabling system provides flexible and reliable solutions for users' current needs. It is more oriented to the future development of high-speed network technology and imposes strict requirements on the cabling system. The ingress on cabling system supports Ethernet, high-speed Ethernet 100Base-T100Base-VG, 1000Base-T, Token network, ATM, FDDI, ISDN, and other applications with strong adaptability, scalability, reliability, and long-term benefits. This cabling system has the following features:
1. compatibility. The cable on cabling system is a fully open cabling system. It has a full set of adapters that can convert different transmission media from devices of different manufacturers to the same shielded or unshielded twisted pair wires, it can transmit voice, data, images, and video signals through twisted pair wires. It uses optical fiber cables to remotely transmit high-speed data and high-definition image signals, and supports the systems of all data and voice equipment manufacturers.
2. flexibility. Because all information systems use the same transmission medium, all information channels are universal. information channels can support telephone, fax, multi-user terminals, ATM, 10BASET workstation, and ring station. You do not need to change the system wiring for activation and modification of all devices. You only need to perform necessary jumper management. The system networking can also be flexible and diverse, and each department can be connected independently and conveniently, it provides necessary conditions for the rational organization of information flows.
3. reliability. The system uses high-quality standard materials to form a set of high-standard information channels by means of combination crimping. Each information channel must be tested with a dedicated instrument to ensure its electrical performance, all system wiring uses a physical star topology and point-to-point connections. Any line failure does not affect the operation of other lines. It also provides great convenience for line operation and maintenance and troubleshooting, this ensures reliable system operation. More importantly, in complex environments, the wide-range electromagnetic interference shielding system provided a safe and reliable guarantee for users to transmit data at a higher frequency of MHz or greater than MHz in the future, at the same time, it also avoids interference between signals of the parallel transmission line.
4. Advanced Nature. The system adopts a very flexible cabling concept and uses fiber-optic and twisted pair cables to form a complete cabling system. All cabling adopts the world's latest communication standards, and all information channels are based on ISDN) standards. Eight-core configuration is used to transmit data through twisted pair wires, and the speed can reach 100 MHz.
5. modular. It is suitable for Integrated Wiring environments of different scales. It can be used to increase or decrease jumper panels and jumpers as needed, and can be wired on the front panel.
I. Application of cabling system in Changde Cigarette Factory
The Integrated Wiring System of Changde Cigarette Factory is planned and designed based on the building plan provided by the factory. The subsystem of the work zone selects Simon cat5e module, Simon National Standard panel and Simon Mingqi information box; the horizontal subsystem uses the four-to-four unshielded twisted pair cables of the Super five category of Alcatel, a cable manufacturer certified by Simon, to meet the testing standard of the Super five category. The management subsystem uses the Simon 19 "high-density RJ45 port distribution frame and the 1U cable rack to manage all the horizontal cables, 19 "optical fiber distribution frame is used to manage the optical fiber between various distribution lines. The Simon-certified 8-core multimode optical fiber is used for the trunk lines.
The office building of Changde Cigarette Factory is located on 11 floors above ground. All layers are used as offices. The Office requires a large amount of information. In view of the minor changes in the future and the large area of the building, the system adopts the second-level management mode, that is, the third and ninth floors on the ground are respectively set up to allocate lines, use a 6-core indoor multi-mode optical fiber to direct the cables to the main data wiring room. Because it is a concentrated office in the building, the amount of information is large, and all telecommunications facilities must be advanced and secure. It is recommended to adopt hierarchical management. The main wiring room is located at Layer 6.
The second floor on the second floor of the annex is used as an office, and the second floor is a conference room and office. It requires a high level of configuration, a large amount of equipment, and a large amount of information, so there are more information points. In order to facilitate management and based on the structural characteristics of the building, the twisted pair wires are directly introduced to the three-layer distribution room of the office building.
The Tobacco storage office building is 4 floors, the building is 40 meters long, the width is 5.5 meters, the 1-3 floors are office areas, and the 4 floors are warehouses. the centralized management method is adopted, that is, a wiring room management method, the wiring room is placed on the second layer.
The four floors on the floor of the scheduling building are 30 meters long, 12 meters wide, and the four floors are offices. The information is large and requires high configuration. In order to facilitate management and based on the structure characteristics of the building, on the second floor, you can use a 6-core outdoor multi-mode optical fiber to bring it to the main data distribution room of the office building.
The sales company's building is 60 meters long, all of which are offices. It also requires high configuration. In the four-layer allocation room, the 6-core outdoor multi-mode optical fiber is used to direct the data to the main distribution room of the office building.
According to the requirements, the master must meet the requirements of 1000 Mbit/s transmission, horizontal information points meet the requirements of 100 Mbit/s exchange, and require good scalability and smooth upgrade capabilities. Therefore, hierarchical management is adopted in the design. The cabling is directed from each information point to the corresponding distribution line for Star connections for 100 Mbit/s transmission. The level subsystem uses cat5e UTP cabling for 100 Mbit/s exchange, and supports backup of telephone lines and computer network lines. The combination of information points is convenient and flexible. The workspace subsystem uses cat5e modules, National Standard panel and information box. The level subsystem uses four pairs of unshielded twisted pair wires in cat5e to meet the cat5e testing standard. The management subsystem uses the express connect distribution frame and cable management frame to manage all horizontal cables. The 19 "optical fiber distribution frame is used to manage the optical fiber cables between various distribution lines. The 19" optical fiber connection center is used as the data main distribution frame, the master data center is located on the sixth floor of the building.
Ii. Technical Features of the wiring scheme:
1. advanced: the cabling materials, cabling technologies, and solutions used in this cabling solution are the most advanced in the world, not only meeting the current network communication requirements for cabling, it is more oriented to the future development of high-speed network technology and has strict requirements on the wiring system. It has strong adaptability, scalability, reliability and long-term benefits.
2. complies with the latest international standard. This wiring system complies with the latest international wiring standard ISO/IEC 11801, and complies with the U. S. TIA/EIA568A wiring standard and the European EN50173 standard.
3. The cat5e level subsystem uses cat5e unshielded and flame-retardant twisted pair wires to support data transmission rates of up to Gigabit Ethernet, basically meeting all existing network applications. Strong complementarity, scalability, flexibility, and high reliability. That is, according to the future business development of Party A, any information outlet can be used as both a data outlet and a voice outlet. You only need to change the Jumper position of the wiring room.
4. the flexible configuration trunk line of the vertical trunk line uses a 6-core outdoor multi-mode optical fiber and five cat-5e twisted pair cables to be deployed at the same time, meeting the requirements for flexible voice and data signal transmission in the work area, it also adapts to the needs of rapid network development in the future.
5. Smooth upgrade of all high-speed network applications
6. the RJ45 8-bit standard interface is widely compatible and can connect network devices of different manufacturers and various terminal devices to the network to transmit voice, data, images, and video bandwidth) and other signals.
7. highly modular all data points are integrated into the same wiring cabinet for ease of management. All patch cord panels are modular and can be added or removed as needed.
The information plug-in with a 8.45-degree inclination is easy to prevent dust, so that the information outlet line naturally hangs down and is not easy to fold, ensuring its durability and reliability.
3. workspace Subsystem
The workspace subsystem is composed of various office areas. It connects the level subsystem with the computer, mainly refers to the connection from the information outlet to the computer or telephone. For new buildings, metal pipes, wire slots, and hidden boxes are usually pre-embedded. The RJ45 buried information outlet should be 30cm away from its power outlet, and 30 cm from the floor along the low side of the information outlet and power outlet.
For a large open room, use a separator board to divide the large open room into several small work areas. The selection, installation method and installation location of the information outlet are affected by the use of the separator board.
1. The layout of office furniture cannot be determined, or the layout of furniture must change frequently:
1) According to the TIA TSB-75 on open office environment wiring recommendations, using permanent walls or columns near the furniture cluster to set a multi-user communication output set, the cables in the work zone derived from the multi-user output set are connected directly along the cable layout or the cabling space of office furniture by means of intercommunication, without the need to install an information outlet. According to the recommended requirements, each multi-user output device limits the service to a maximum of 12 work zones. This solution is suitable for environments with extremely frequent changes in office furniture settings.
2) According to the TIA TSB-75 on open office environment wiring recommendations, the use of permanent wall near the furniture cluster or columns set the junction point, from the junction points of the cable through the interconnection mode, the cabling space along the pallets or office furniture leads to the information outlet of the work area. According to the recommended requirements, each integration point limits the service to a maximum of 12 work zones. This solution is suitable for environments with less frequent changes in office furniture.
2. You can use the following methods to fix office furniture:
1. The information outlet is installed on the ground. It is required that the metal bottom box installed on the ground should be sealed, waterproof, dustproof, and capable of lifting or downgrading. This method is costly for design and installation, and is difficult to manage and maintain.
2. The information outlet is installed on the separator board. That is, the horizontal cable is first directed from the corresponding distribution line to the wall or pillar near the furniture cluster, and along the vertical direction to the ground. When the owner stays, the furniture location is determined), leading to the partition or furniture cabling space under the carpet, to each work area. Finally, install the information outlet in the appropriate location. This method is cheaper to install.
3. The information outlet is installed on the wall. This method can install RJ45 embedded sockets at a certain distance along the wall or pillar near the office furniture cluster. This method is less feasible for an open office environment with a large area. However, it is suitable for small office environments.
Iv. horizontal subsystem horizontal cabling subsystem is designed to extend the trunk subsystem line to the user's work zone. The system connects cables from each sub-wiring room to each work zone.
1. horizontal Cable Routing Design the ceiling of the corridor should be installed with the corresponding specifications of the Main Trough, enter the room and the office area, from the Main Trough lead to the line trough or pipe), to be embedded or installed) along the wall) to each information point.
2. horizontal cable selection and calculation of the level of the data system line are based on the cat5e horizontal line transmitted data produced by Alcatel certified by Alibaba on. The system has good flexibility and will be well supported for multimedia high-speed data applications with digital phones, visual phones, and speeds higher than 100 Mbit/s.
The ALCATEL catel cat5e unshielded twisted pair wires support a transmission rate of 155 Mbit/s when the distance is less than 622 Mb. If the distance is smaller than MB, the transmission rate can reach Mbit/s if the distance is determined by using the space expansion technology, it can fully meet the needs of future expansion and upgrade. In addition, it can transmit a variety of 70 v dc voltages and weak current signals at 10 MHz and MHz frequencies at a corresponding distance.
V. Management Subsystem Design
The management subsystem consists of a communication and interconnection distribution frame. The management point provides a means to connect to other subsystems. Communication and interconnection allow the communication lines to be located or relocated to different parts of the building, so as to facilitate the management of communication lines and facilitate the insertion and removal of mobile terminal devices.
6. Trunk Line Subsystem
A cable trough or vertical climbing should be established in the shaft to install and fix the vertical subsystem cable. The groove in the shaft should be connected to each layer of wiring room with a metal groove.
In this solution, we adopt level-2 management. That is, the horizontal subsystem and the vertical trunk subsystem implement flexible voice and data configuration through jumper.
The trunk cable subsystem connects computer equipment, PABX, control center, and management sub-systems. The commonly used media are optical fiber cables, large pairs of twisted pair cables, and four pairs of twisted pair cables.
Optical Fiber Transmission is far away from any electromagnetic signal and has strong corrosion resistance. It is the best medium for transmitting digital signals and is easy to upgrade later.
The CAT3-UTP log cable has the same physical characteristics as the similar cables used by the level subsystem. It is used as the backbone transmission cable for low-speed telephone.
The ALCATEL53002 pair of twisted pair wires belong to cat5e transmission medium. They share the same physical characteristics as similar cables used by the level subsystem. They are used as the backbone transmission cables for high-speed data applications such as computers and video images.
VII. subsystem design between devices
The device subsystem is the Management Center of the entire wiring system. It consists of cables, connectors and related supporting hardware in the Main Wiring room between devices. It connects various devices in the public system.
In this solution, fiber connection centers on 19 "HD, and 19" are used for management. The fiber connection center can be directly connected to the switch through jumpers, saving a lot of space, this configuration is highly practical.