The concept of integrated cabling system

General Wiring System Introduction

The Integrated cabling System (pds,premises distribution System) is designed for computer and communication wiring systems, which indicates that it can meet the requirements of various computers and communications. It includes:

1 analog and digital voice system;

2 High speed and low speed data system;

3 fax machines, graphics terminals, plotter, etc. need to transmit the image data

4 video signal of TV conference and security surveillance system;

5 Transmission of 28 VHF wideband video signal;

6 Integrated wiring for building safety alarm and air-conditioning control system sensor signal.

PDS can meet the wiring requirements of all computers, communications and building automation cabling systems within and between buildings. Since the PDS is a comprehensive system, the integrated wiring can use the same cable and wiring terminal Board, as well as the same Plug and modular jack for voice and data transmission, you do not have to worry about the compatibility of various equipment issues. ---http://bianceng.cn (computer science)

The PDS is modular in design and is therefore easiest to expand and regroup on the wiring. The star topology is used in the same way as that of the building wiring in telecommunications and eia/tia-568. Because in the star structure, the workstation is created from the center node, and each line is independent of the other lines. Therefore, when changing and rearranging the device, it only affects the route associated with it and has no effect on all other lines. In addition, this structure makes the fault analysis work in the system very easy. Once the system has failed, it can quickly find the point of failure, and to be excluded.

PDS is composed of 6 independent subsystems, using the star structure, can enable any subsystem to enter the PDS system independently.

These 6 subsystems are:

1) Work area subsystem (Work Location) It is composed of equipment connected to the information socket, including information outlets, socket boxes (or panels), connecting cords, adapters, etc.

2 The horizontal subsystem (horizontal) Its function is to extend the trunk line subsystem lines to the user workspace. The horizontal system is arranged on the same floor, one end is connected to the information outlet, the other end is connected with the jumper rack in the interlayer. The horizontal subsystem mainly uses 4 pairs of unshielded twisted pair, it can support most modern communication equipments, and can adopt the "Fiber to desktop" scheme when the broadband transmission is required. When the level of the area is quite large, there may be one or more satellite wiring in this range, the horizontal line in addition to serve to the equipment, but also through the satellite wiring between the terminal to the information outlet.

3 Trunk Subsystem (backbone) Usually it is from the main equipment (such as computer room, SPC room) to all levels of management room. It uses large logarithm of cable feeder or optical cable, both ends are connected between the equipment and the management of the jumper rack.

4 Equipment Subsystem (equipment) It is composed of cables between equipment, continuous jumper racks and related supporting hardware, lightning protection devices and so on. The ideal setting is to design the computer room, switch room and other equipment in the same floor, so that it is easy to manage and save investment. Of course, can also be based on the specific situation of buildings to design a number of equipment between.

5 Management Subsystem (administration) It is the bridge between the backbone subsystem and the horizontal subsystem, and it can also provide the conditions for the same layer network. These include twisted pair jumper racks, jumpers (with quick-connect jumpers and simple jumper points). There should also be fiber-optic jumper racks and fiber jumpers in cabling systems that require fiber optics. When the terminal device location or LAN structure changes, as long as the change jumper mode can be resolved without the need for rewiring.

6 The Architecture complex Subsystem (campus) It is the wiring system which connects the data communication signals of many buildings. It uses copper cables and optical cables that can be mounted on an aerial installation or laid along underground cable pipelines (or directly buried), and electrical protective devices that prevent the surge voltage of cables from entering the building.

Characteristics of integrated wiring system

Compared with the traditional wiring system, the integrated wiring system has many advantages, which are mainly shown in the following aspects:

1 compatibility is the so-called compatibility refers to its equipment or programs can be used in a variety of systems characteristics. Integrated wiring system will voice signal, data signal and monitoring equipment image signal wiring through a unified planning and design, using the same transmission medium, information outlets, communication equipment, adapters, and so on, the nature of these different signals into a set of standard wiring system. Compared with the traditional wiring system, it can save a lot of material, time and space. In use, the user can not define a certain work area of the specific application of the information outlets, only a certain terminal equipment access to the information outlets, and then between the management and equipment in the connection between the equipment to do the corresponding jumper operation, the terminal device is connected to its own system.

2 Open the traditional wiring way, the user selected some kind of equipment, also has chosen with it to adapt the wiring way and the transmission medium. If the replacement of another device, the original wiring system will be replaced. That would add a lot of trouble and investment. The integrated wiring system, which adopts the open architecture and conforms to a variety of international standards, is open to almost all famous manufacturers, such as IBM, DEC, Sun computer equipment, At&t,nt,nec and other switch equipments. And for almost all communication protocols are also open, such as EIA-232-D,RS-422,RS-423,ETHERNET,TOKENRING,FDDI,CDDE,ISDN,ATM.

3 Flexible cabling System, because all information systems use the same transmission medium, physical star topology structure, so all channels are universal. Each information channel can support telephone, fax, multi-user terminals. 10BASE-T Workstation and Token Ring workstation (using the 5-type connection scheme, can support 100BASE-T and ATM, etc.) all the equipment and changes are not required to change the system wiring, just add or subtract the corresponding network equipment and the necessary jumper management can be. In addition, the system network can be flexible and diverse, even in the same room can have multi-user terminal, 10BASE-T Workstation, Token Ring workstation coexist, for users to organize information provided the necessary conditions.

4 Reliability integrated Wiring system adopts high quality material and combination crimping method to form a set of high standard information channel. All devices are through the UL, CSA and ISO certification, each information channel to use the physical star topology, point-to-point end-to-end, any one line fault does not affect the operation of other lines, at the same time for the operation and maintenance of the circuit and trouble shooting provides a great convenience, thus ensuring the reliable operation of the system. The system adopts the same transmission medium, so it can be standby and improve standby redundancy.

5 Advanced integrated wiring system uses fiber and twisted-pair-line blending mode, which is very reasonable to form a complete wiring system. All wiring is the world's latest communication standards, information channels are according to the B-ISDN design standards, according to the eight-core twisted-pair configuration, through the 5-type twisted pair, the data can reach a maximum of 155Mbps, for special user needs can be spread to the desktop (fiber--to the Desk). Trunk cable can be designed to 500M bandwidth, for the future development of a sufficient amount of margin. Through the main channel can simultaneously transmit the multi-channel real-time multimedia information, simultaneously the physical star wiring Way has laid the solid foundation for the future development Exchange type Network.