Generic wiring design standards and design specifications

o Design standards:

o IEEE802 standard, 100BASE-TX standard

o EIA/TIA568 industrial standards and international commercial building wiring standards

o ANSI FDDI/TPDDI 100Mbps

o CCITT ATM 155Mbps/622Mbps

o Installation and design specifications:

o China Building Electrical Design Code

o Communication design specifications for industrial enterprises

o General rules for structured cabling system design

o Technical specifications for construction and acceptance of indoor telephone lines

o Building and building complex integrated wiring system engineering design code (revised version)

o Construction and acceptance specification for integrated wiring system engineering of buildings and building complexes (revised version)

Generic wiring design principles

Practicability ─ Fully consider the specific conditions and specific goals of the computer room. After the implementation of the communication wiring system, it will be able to adapt to the development of technology now and in the future, and realize data communication, voice communication, and image communication.

Flexibility—The wiring system can meet the requirements of flexible application, that is, any information point can be connected to different types of equipment, such as computers, printers, terminals or telephones, fax machines. Assign dynamically. The integrated wiring system should be structured and modular, and can be jumpered arbitrarily to change the purpose of the information terminal.

Modularization-In the wiring system, except for the wires laid in the building, all other connectors should be standard building blocks to facilitate management and use.

Expandability-The cabling system is expandable, so that when there is greater development in the future, it is easy to expand the equipment. The system has good scalability and upgradeability, so that the investment in the current period of construction will be protected after future upgrades and expansions.

Economical ─ On the basis of meeting application requirements, reduce the cost as much as possible. In an attitude of being responsible to the unit, we have formulated multiple plans for comparison, and adopted the most cost-effective and reasonable plan.

Advancement——We should try our best to adopt various advanced and mature technologies from the 90s in the world, so that the design of the system should be established on a high starting point. The system structure and equipment used in the system should have the international advanced level, have development potential, and be in Upward trend. The design of the system has a certain degree of advancement, the starting point of technology should be high, the life cycle should be long, and the technology and basic facilities adopted by it are in a leading position when entering the 21st century.

Openness ─ In order to enable the computer room to obtain more information through the network, the system must be able to smoothly interconnect with domestic and foreign networks. At the same time, the selected software and hardware platforms should be open and versatile, compatible with most mainstream software and hardware systems today, and achieve cross-platform operation.

High-speed: The system can process and transmit multimedia information. It adopts Category 5 lines and optical cables to form a network, and strives to increase the throughput of the network. At the same time, the Client/Server structure mode should be adopted to reduce the overhead of network communication resources.

Reliability ─ It has sufficient reliability redundancy, backup storage capacity and fault tolerance. The long-term stable operation of the system must be ensured to localize the impact of the failure. The network design should facilitate the analysis and elimination of faults.

Security ─ There should be solid security precautions, and the computer network should be able to effectively prevent unauthorized access and resist virus attacks through FIREWALL.

Easy to manage and maintain—The system should have powerful management functions, and should be easy to operate and maintain.

Structure type of structured cabling system

Commercial building wiring standard EIA/TIA568 stipulates: Use star structure physical wiring to realize various forms of network logical topological structure, that is, no matter how the network technology develops in the future, the topological structure of the local area network must be bus type, ring type, tree Type, or a combination of the above forms, and the star-shaped structured physical wiring can realize the above-mentioned bus type (such as Ethernet/IEEE802.3) and ring type through flexible conversion of jumpers in the wiring room. (IEEE802.5/TOKEN-RING, X3T9.5 TPDDI/FDDI), star (Star LAN) or hybrid (including ring, bus, etc.) topology.

Reasons for adopting integrated wiring system

Nowadays, in companies, enterprises, institutions, and government departments, information has become a critical resource. It must be accurately and quickly transmitted between various communication equipment, data processing equipment, and display equipment. For this reason, companies, enterprises, and government departments all request to improve these communication systems in the shortest possible time, and configure various wiring systems as needed. In China, even in newly designed buildings, the past wiring technologies are often used, which makes the wiring of various systems incompatible, difficult to adapt to the development of new technologies, and the pipelines are overcrowded. Huge investments are often repeated. This situation will become worse and worse as the number of computers increases, equipment updates, personnel changes, and office environment changes. Any additions and changes may cause changes in the overall situation, which not only affects the work efficiency of employees, but also has a negative impact on the operation of the company and the government. Especially with ISDN (Integrated Service Data Network), ATM (Asynchronous Transfer Mode), FDDI/TPDDI (Fiber Distributed Data Interface/Twisted Pair Distributed Data Interface), the emergence, application, promotion and development of building automation systems , The original wiring system used will not be able to meet the requirements. Therefore, seeking a more reasonable, more optimized, flexible, stable and expandable wiring technology has become a top priority. It can not only meet current requirements, but more importantly, meet future challenges to the wiring system.

Subsequently, various structured cabling systems that meet the EIA/TIA 568 standard have been promoted and widely accepted. Examples of this standard are PDS of AMP and IBDN of IBM ACS Canada Northern Telecom. They can make a one-time wiring investment to solve the wiring problems that will occur within 15 to 30 years of this year.

1. Problems with traditional wiring:

For a building or a group of buildings, whether it can always have the most advanced modern management and communication level now or in the future depends on whether there is a complete, high-quality and international standard wiring system in the building. In the traditional wiring system, multiple subsystems are wired independently and different transmission media are used. This brings a series of drawbacks to the design and future management of the building.

a) In line routing, excessive constraints between professional designs have made the pipelines of the final facility intricate and complicated. It takes many times to summarize the drawings to arrive at a compromise solution.

b) When wiring, repeat construction, resulting in waste of materials and personnel.

c) The weak current systems are mutually independent and incompatible with each other, causing great inconvenience to users.

d) The change and movement of equipment will make it impossible for end users to change the original wiring to adapt to their own needs. This requires the user to redesign and construct the wiring system, which causes unnecessary waste and damage, is difficult to maintain and manage, and at the same time has a great impact on the appearance of the original building when it is expanded.

Therefore, the original wiring method does not have openness, compatibility and flexibility.

2. The advantages of adopting a structured wiring system according to international standards

a) Unify the wiring of each system to improve the cost-performance ratio of the system.

b) With openness and full flexibility, no matter how the various subsystem equipment changes or how the location moves, the wiring system only needs to be jumpered without any other changes.

c) The design idea is simple, the construction is simple, and the construction cost is reduced.

d) Fully adapt to the development of communication and computer networks, and lay a solid line foundation for the full automation of office in the future.

e) Greatly reduce the number and costs of maintenance and management personnel. It can be changed and adjusted at any time according to the different needs of users.

The structure of the integrated wiring system

The structured integrated wiring system provides users with the most reasonable wiring method and relies on its high-quality materials to change the appearance of traditional wiring, laying a foundation for modern buildings to truly become smart buildings without changing communications within 15 years. Transmission medium basis of the line

SCS composition

The combined wiring system is composed of six subsystems and defined separately:

i WORK AREA SUBSYSTEM: Work AREA SUBSYSTEM is composed of wires connecting terminal devices to information sockets, including connectors and adapters.

i Horizontal wiring subsystem (HORIZONTAL SUBSYSTEM): to realize the connection between the information socket and the management subsystem (jumper frame), commonly used 1010 (category 3) or 1061 (category 5) 8-core 4-pair twisted pair to achieve this connection .

i ADMINISTRATION SUBSYSTEM: The management subsystem is composed of cross-connected and interconnected patch panels. The management point provides connection means for connecting to other subsystems. Cross-connection and interconnection allow the communication line to be located or relocated to different parts of the building, so that the communication line can be managed more easily, so that the terminal equipment can be easily plugged in and removed.

i The backbone subsystem (RISER BACKBONE SUBSYSTEM): realizes the connection between computer equipment, program-controlled exchange (PBX), control center and various management subsystems. Commonly used media are large-pair twisted-pair cables and optical cables.

i Equipment Subsystem (EQUIPMENT SUBSYSTEM): The equipment room subsystem is composed of cables, connectors and related supporting hardware in the equipment room. It interconnects various equipment of the public system equipment. This subsystem connects the junction of trunk lines and wiring junctions with public system equipment (such as PBX).

i Building group subsystem (CAMPUS SUBSYSTEM): to realize the interconnection between buildings, the commonly used communication medium is optical cable or large logarithm, and optical cable or large logarithm is used between backbone and building group.

What needs to be pointed out is that for data communication, the use of optical cables between the backbone and the building complex and the use of FDDI or ATM technology can enable the transmission rate between systems to reach 100Mbps or 155Mbps. For the work area, if CAT3 UTP cable is used, the current technology can reach 10Mbps (10Base-T); for CAT5 UTP cable, it can reach 100Mbps for current equipment. For voice communication, a large logarithm is used between the backbone and the building complex.

Selection of integrated wiring system:

1.1 Wiring product selection

At present, there are several large structured wiring manufacturers in the world: LUCENT, AMP, SIEMON, IBDN, KRONE, IBM and other companies. Each of these companies has its advantages. Their cabling products can meet all the five categories of EIA/TIA 568 standards. German KRONE’s cabling products entered China late, with too few user bases, and less agency and investment in the country than other companies; LUCENT SIEMON and IBDN are not comparable to AMP in some product processes; IBM’s characteristic is full shielding, However, in an ordinary office environment, it is completely unnecessary to use the expensive IBM ACS cabling system, and IBM's main product is not cabling, and less effort is invested in this area. AMP puts forward the theory of integrated wiring and is the largest supplier of wiring products in the world. Many indicators exceed the five types of standards stipulated by EIA/TIA 568. There are companies and offices in China. AMP has strict management and technical training in domestic agencies. Comprehensive and good market consistency, so that the interests of end users are guaranteed. AMP's huge investment in the country is also a strong guarantee for its 15-year warranty plan. Therefore, our company recommends AMP wiring system.

1.2 Introduction to AMP

SCS (Structured Cabling Systems)-structured cabling system, the quality and performance of its products not only meet and exceed relevant international standards, such as ISO11801, TIA/EIA 568A, IEC, ATM Forum, FDDI, EMC, etc. Regulations.

The specially designed unshielded twisted pair (UTP) is used as the transmission medium. This kind of twisted pair has greatly improved transmission bandwidth and anti-interference performance than the traditional twisted pair. It can support up to 100Mbps data transmission , POWERSUM (Category 5) system can fully support 155Mbps and 622Mbps ATM data transmission. Because SCS unifies the transmission media of different systems and the perfect combination of AMP devices with excellent performance, it provides users with truly advanced technology for the future. The modular, flexible and complete wiring system. It can be expanded and changed to meet the changing needs of users, while at the same time possessing the inherent openness of today's and tomorrow's technologies.

1.3 Features of AMP integrated wiring system

Openness

The AMP integrated wiring system strictly follows the international standards of the wiring system and is a fully open wiring system. It has a full range of adapters, which can convert all the different transmission media of different manufacturers' equipment into the same shielded or unshielded twisted pair. Voice, data, image, and video signals can be transmitted through the twisted pair; optical fiber can be used. Long-distance high-speed data transmission, high-definition image signal, can support all current data and voice equipment manufacturers' systems.

flexibility

Since all information systems use the same transmission medium, all information channels are common, and the information channels can support telephone, fax, multi-user terminals, ATM, 100BASET workstations, and token ring stations. All equipment opening and modification do not need to change the system wiring, only need to make the necessary jumper management; the system network can also be flexible and diverse, and each department can be independently networked and can be easily interconnected to organize information rationally Flow provides the necessary conditions. The AMP system can be adapted to various types of buildings, and various old and new office buildings, industrial areas, education and training centers, factories, campuses, and residential quarters can all use the AMP system. AMP can not only meet the needs of current information transmission, but also adapt to future network structure changes or equipment expansions, which can be said to remain unchanged in response to changes.

reliability

The AMP system uses high-quality standard materials to form a set of high-standard information channels in a combined crimping manner. Each information channel is tested with a special instrument to ensure its electrical performance. The system wiring uses a physical star topology, point-to-point. Termination, any line failure will not affect the operation of other lines; at the same time, it provides great convenience for line operation and maintenance and troubleshooting, thus ensuring the reliable operation of the system. More importantly, in a complex environment, AMP's full electromagnetic interference shielding system provides users with a safe and reliable guarantee for data transmission at higher [100Mbps or greater than 100Mbps] in the future. At the same time, the mutual interference between the signals of the parallel transmission line is also avoided. AMP also provides fifteen years of system application guarantee and product quality guarantee.

Advanced

AMP's shielded product series have better transmission reliability in high-speed network environments or complex electromagnetic environments