In order to truly realize the functions of data communication, voice and multimedia information collection and processing, we must first build an integrated wiring system, plan all information points in the office building for structured wiring PDS system, and provide an operating platform for the network system for the building. The design and construction of cabling system should fully consider the future hardware upgrade and expansion of the whole application system to ensure that the cabling system remains advanced for a long time. The construction of integrated wiring system is only the first step. It is also necessary to select network equipment with good cost performance for networking debugging.
catalogue
The first chapter, the overall goal.
Chapter 2: Design scheme of integrated wiring system.
Chapter III, Project Quality Management
Chapter four, network structure and equipment selection.
Chapter 5: System design of SPC exchange.
Chapter 2: Design scheme of integrated wiring system.
A, wiring system requirements
PDS is adopted, and the network adopts 100M fast Ethernet.
Second, IBDN PDS wiring system
NCRDX company is a world-famous manufacturer of structured wiring products, and its products conform to international EIA/TIA.
Its structured wiring products have also been recognized by our government. We have more than 100 years of professional experience in designing, developing, manufacturing and deploying cables, cabling systems and cable management solutions, and our leading position in establishing and standardizing industrial standards is unparalleled in the world. 1995
IBDN, which was the first to launch DYNATRAX NORDXDE for automatic network management in.
Intelligent cabling solutions not only have the best end-to-end performance today, but also provide a variety of excellent quality solutions, which can fully meet the needs of users for commercial communication infrastructure, so that they can enjoy high efficiency, security and management performance, and adapt to current and future needs.
With the continuous development of data transmission speed and application, PDS system of IBDN can transmit voice, data, video and image signals. Because of its structured design idea, PDS has good expansibility, which can meet the needs of future equipment change and movement to the greatest extent. At the same time, the topology of the network can be changed at any time by jumping wires and replacing adapters to meet the ever-developing network requirements.
Third, the main advantages of PDS wiring system
Practicability After the implementation of the integrated wiring system, it can meet the current and future development of communication technology and realize the integration of voice and data information.
Flexibility This system can meet the needs of different applications. An information point can connect different terminal devices, such as telephones, computers, printers, etc. , and the administrator needs to do is a simple jumper, complete line positioning. Extensible cabling system can be easily extended to meet the future development. Based on the mature structured wiring system product PDS of NORDX, an internationally renowned company, and the company's long-term rich experience in wiring system design and installation, combined with the specific characteristics of public buildings and user needs, and considering various factors comprehensively, an integrated wiring implementation scheme for computers and other systems is designed.
Fourth, the standards adopted by the wiring system.
design standards
In addition to analyzing users' needs, the following standards should also be strictly observed:
IEEE 802.3 10 - BASE - T， 10BASE - F
IEEE 802.5 token ring
EIA/TIA 568,569, EIA/TIA-TSB 36/40,67 Integrated Wiring Standard for Commercial Buildings (revised in 1994)
Ieee 802.12100 baset LAN standard.
ISO/IEC JTCI/SC25/WG3
ANSI FDDI/TPDDI
ANSI X3T9.5
Installation and design specifications:
Standards of China Engineering Construction Standardization Association
Code for Engineering Design of Building and Building Integrated Wiring System (1997)
Code for electrical design of buildings in China
Code for communication design of industrial enterprises
PDS design rules and installation specifications of IBD open wiring system
Verb (short for verb) planning
The whole integrated wiring system adopts star structure, which has the advantages of providing independent channels, distributed management, easy reconfiguration and supporting various applications. In order to ensure the transmission quality and flexibility of application, more than five kinds of wiring system equipment are used for horizontal wiring.
Six, layout design principles
1, information point distribution
According to the preliminary layout of the office area of the office building of XX municipal government and the actual demand of XX municipal government, we initially designed 40 comprehensive wiring information points for the office building of XX municipal government.
There are 40 information points in two buildings * * *, and all information points are designed according to the super-five standard, reaching1100mm.
The data transmission speed is fast, and all information points can realize voice and data commonality through jumpers. The network central control room (MDT room) is set in the microcomputer center on the second floor of the main building, and the main distribution frame (MDT) is placed in the central control room. At the same time, a program-controlled exchange can be placed in the central control room, and a network center computer room and a network server can be placed next to the central control room. Because the sum of the vertical distance plus the horizontal distance from the central control room on the second floor to the farthest information point is less than
90M, in order to facilitate centralized management, we no longer set up horizontal wiring closets (IDT) on each floor. All wiring and management are carried out in the main wiring room of the central control room, and cables are laid directly from the main wiring room to all information points, and all information points are in box mode. We use IBDN over five products for all integrated wiring products, namely over five twisted pairs, over five information sockets, over five quick jumpers and over five products.
BIX module, etc. , can improve the data transmission speed of 100M, meet the needs of high-speed Ethernet and ATM network data transmission, thus laying the foundation for high-speed data transmission.
Equipment requirements for the central computer room:
Standard cabinet, which mainly installs network equipment and provides jumper management. The arrangement of equipment in the computer room should be convenient for the maintenance personnel of the computer room, and there should be enough heat dissipation space around the machine.
The computer room requires an independent grounding protection system, and the grounding resistance is not more than 4 ohms. The computer room should be equipped with an independent power supply circuit.
Seven. Introduction of each subsystem of integrated wiring
1, workspace subsystem
System description:
In this project, all wiring systems adopt IBDN super class 5. According to the unshielded twisted pair lighting standard, each information point can meet1100mm.
The data transmission speed is enough to support the needs of existing data and voice systems and future high-speed data and video systems.
2. Design of horizontal wiring subsystem
◆ Area description:
The horizontal area system adopts star topology structure, which extends the backbone system to the work area and terminates at the information socket.
◆ System description:
The horizontal lines are led out from the ground distribution frame into the main line trough, and distributed to different distribution pipes to the wall information installation box along the trough. The entire wiring distance must be 90 meters.
Ensure that the data signal is within the normal attenuation range. The horizontal wiring of information points adopts super-five unshielded twisted pair.
(3) Main wiring management subsystem
◆ Area description:
In the management area, communication wiring equipment is placed in the central computer room, and the horizontal areas are connected by jumpers. The main components are distribution frame and jumper.
Composition of Building Integrated Structured Wiring System
◆ System description:
The data distribution management system suggests adopting the IBDN series modular distribution frame which is very suitable for the data system. The data distribution frame is installed in a standard cabinet and can be locked to ensure safety.
According to the characteristics of this system, we did not adopt the vertical trunk system and the main system between equipment in the engineering design.
VIII. List of required equipment and materials and cost budget:
leave out
Chapter III, Project Quality Management
First, the new construction concept of "with the installation and measurement"
Network cable installation is manual work. In order to eliminate human error factors and ensure the performance and quality requirements of the installed and delivered products, the final test must be carried out.
Nowadays, companies that want to install new network cabling efficiently want to ensure that their investment will not be wasted in the next few years. In particular, they require that the installed cables and related hardware should comply with TIA568.
Super Category 5 cable specification defined in. However, if the most advanced components are used to complete the cable wiring, can it meet the expectations of users? It all depends on the installation technology and construction experience.
So, what has been changing the performance of wiring? Faults encountered in the final testing phase are usually divided into two categories:
Connection failed.
That is, the connection and termination failure between independent cables in the link. At present, this is the most common fault. This is closely related to the technological level in the installation process. The most common faults are: wrong cable label, open connection, wrong twisted-pair connection diagram (including wrong pair, reversed polarity, staggered) and short circuit.
Cable performance problem
When there is no connection error in the link, there may be a problem that the transmission characteristics required to support network operation are not satisfied. The transmission characteristics of a link are mainly determined by true attenuation, near-end crosstalk (NEXT), characteristic impedance, peak noise and signal-to-noise ratio, which are collectively called performance failures.
Second, the project implementation
< 1 > main contents of the project
Detailed design of all systems in engineering design
Horizontal wiring
Identification of wiring
Installation of sockets and distribution frames
test
Provide all engineering installation drawings and forms.
Systematic training
(2) Engineering construction
Standards to be followed in engineering construction
Clearly mark the direction and distribution of various lines, and make identification marks at both ends of each line.
(3) Information socket management:
Mark and record the distribution of wire pairs in the socket, the serial number of the socket, the connectable equipment and whether it is open or not.
(4) Distribution frame management:
For each port, it is necessary to establish a unified number of the socket connected to it or the connected distribution frame, arrange the distribution frames according to the classification, and record the equipment and purpose assigned to each port on the distribution frame.
(5) jumper management
Use jumpers of different colors to distinguish jumpers of different devices. Use the entire spool to keep the jumper clean.
(6) Work area construction matters
When terminating the super-Category 5 information socket, the peeling distance of the super-Category 5 cable should be as short as possible, and it needs to be rotated one more turn along the twisting direction to ensure that the twisting degree of the super-Category 5 twisted pair will not be damaged during connection, thus affecting its super-Category 5 transmission standard.
When reserving the information socket base, put a rubber protective sleeve on the entrance of the branch pipe or grind off the quick opening at the interface to ensure that the horizontal line will not be cut off by the quick opening at the entrance when drought occurs.
(seven) the horizontal regional subsystem construction matters
Before wiring construction, cooperate with civil engineering to carefully survey the direction of trunking, and try to keep a certain distance from strong trunking.
Starting from the junction of the branch pipe of each information point in the work area and the main line slot, leave the line and stay the line. Before pulling the cable, mark the unshielded twisted pair with an indelible pen or special sleeve. In the process of cable drawing, make sure that each UTP
The wires will not be excessively twisted, damaged or broken, thus damaging the performance of the twisted pair.
When wiring the ultra-Category 5 distribution frame, the stripping of the ultra-Category 5 cable must be as short as possible to minimize the exposure of the internal twisted pair; When terminating, don't open the twisted pair, but use your fingers to twist the wire from the middle section and then wire it directly. Otherwise, it will destroy the performance of the super-category 5 line.
When terminating ultra-Category 5 twisted-pair cables, in order to ensure as little stripping as possible, they should be terminated in strict accordance with the main color sequence.
(VIII) Subsystem construction of equipment area
Electrical protection equipment should be grounded, and all grounding points should be connected with the weak current system of the whole system.
Pay attention to the number of cables from all floors. For the convenience of construction, don't mistake the cable. Therefore, all cables should be tied regularly with tie wires.
The wall of the distribution frame is installed on the wooden board coated with fire retardant paint, and the thickness is not less than 25mm.
Third, the system test
The test of PDS is divided into three steps:
(1) In order to test the molecular system of the PDS system being installed, special testing instruments can be used to test PDS.
It can test the open circuit, short circuit and polarity of each subsystem after installation. During the polarity test, noise or cable failure may be caused (the test reference value is 7500
Ohm or less than the resistance between the ground wire and the conductor is considered as a ground fault).
(2) Using traditional instruments to test the installed PDS project.
(3) Test report
In view of the above test contents, our company tests every PDS project in strict accordance with the test steps and issues a complete test report to users.
Selection of testing tools
Facing the new standard, the cable tester using traditional analog measurement technology is facing severe challenges. Analog measurement technology is to test cables by sending sinusoidal signals with different frequencies many times. Then how to ensure the consistency and accuracy of the test, how to eliminate the influence of cable sockets and plugs, and how to conduct two-way near-end crosstalk test have become problems. Fluke tester produced by Fluke Company, which has accumulated more than half a century's experience in manufacturing test instruments and equipment, uses patented digital technology to test cables, which not only fully meets the second-class accuracy standard required by TSB-67, but also has more powerful test and diagnosis functions.
FLUKE tester sends a pulse signal consistent with the signal actually propagated by the network when testing the cable, and collects the time domain response of the signal, and then processes the digital signal of the time domain signal to get the frequency domain response. In this way, a test can replace thousands of analog signals.
Four. accept
Both parties shall conduct acceptance according to the indicators given in the test report. The test results all meet the system standards, and all indicators are qualified.
Verb (abbreviation for verb) maintenance and service
1, quality assurance:
First of all, PDS system design should have a reasonable and scientific design scheme and system configuration, because our technicians have strong strength in PDS system design and system configuration.
When the project officially started, the engineering management of our company will PDS.
All samples of imported materials for this project shall be sent to Party A for seal, so that Party A can supervise the consistency of the materials used in this project and the imported materials designed in the system design and construction drawings.
After the completion of each subsystem of the project, the company's project should be accepted within the company to complete the test of this subsystem. Only after the subsystem is completely qualified can the subsequent subsystem be installed and constructed.
2. Engineering maintenance and service
The maintenance of the integrated wiring system project undertaken by XX Computer Company falls into two categories:
First, routine engineering maintenance, that is, regular (half a year) in-plant maintenance and testing for each integrated wiring project undertaken by the company.
The second is unconventional engineering maintenance, that is, when a PDS project has problems, the company provides timely maintenance and services to users. According to company regulations, user PDS
Unconventional maintenance and services of the project are divided by city, province and province, and users are informed of the implementation regularly (generally 6 hours, 12 hours, 48.
Hours) arrived at the scene for maintenance and service. Our company maintains the records of each PDS project, regularly arranges the maintenance records for users, and regularly reports to IBDN company.
The company can provide arch maintenance assistance according to customers' needs, and provide preferential treatment for users' subsequent upgrades.
Personnel training of intransitive verbs
On-site training content:
Wiring method of integrated wiring system
Configuration of wiring system
System testing method
Maintenance and warranty technology
Chapter four, network structure and equipment selection.
First, the choice of network hardware equipment
1. conversion
Adopt Bay 350t workgroup switch of bay company. The machine has 16 port, 10/ 100M adaptive Ethernet port and an expansion module slot, which can be expanded.
100BASE-FX fast Ethernet optical fiber module and ATM slot module. Support MCA address above 4080, PACE technology and VLAN up to 16.
Management function, with the function of enhancing multimedia and real-time application transmission.
The secondary working group under each backbone network segment plans to adopt Bay's Bay303 switch, which has 1 each 10M/ 100M and 24 10M ports. All information points are 10M.
Switch to the desktop.
2. The choice of network card
High-performance Bay's network card has original high-speed network card technology and uses high-quality IC devices to achieve quite reliable and perfect functions and performance.
Therefore, the commitment of lifetime warranty is put forward. We choose Bayfa 31010100 adaptive network card, which has the characteristics of two-speed duplex. You can make full use of 4
According to the physical characteristics of twisted pair, the bandwidth is expanded and the network speed is doubled.
3. Web server
As the central processing component of the network, the network server bears most of the load of network processing, so it is very important to choose a network server with strong processing ability and stable performance for the efficient and smooth use of the network we have built.
According to the work demand of XX municipal government, we suggest to choose the server product produced by IBM in the United States: PC SERVER330.
The IBM PC SERVER330 server product adopts 333MHZ Pentium II II processor, equipped with 5 12KB ECC L2 cache and 64MB EDO.
ECC memory (expandable to 1GB), integrated PCI bus, ultra-wide SCSI and 10/ 100Mbps.
Adaptive network card. It can meet our network needs and bear the burden of processing tasks in the network center.
4. Network workstation
As the user's network front-end processing tool, network workstation should follow the principle of easy use and sufficient selection, and can't blindly pursue high performance. At the same time, in the choice of brand, it is recommended to choose domestic brand machines. The main reasons are as follows:
From the point of view of microcomputer, the domestic computer development level is almost the same as the international level, and domestic brand machines are often more suitable for the national conditions, and the cost performance is more suitable for the needs of Chinese people.
Domestic brand machines have local advantages, which can provide high-quality and efficient services more quickly and minimize the loss of users.
& lt picture >
Computer network structure diagram of XX municipal government office building
Second, the software scheme:
Considering the maturity, reliability and fluency of software technology, we make the following choices.
System software:
Select Chinese version of Windows NT Server4.0+Server pack3 as the network operating system.
The WEB service adopts Microsoft IIS4.0, which provides WEB, FTP and Gopher services.
E-mail and message servers use Microsoft Exchange Server5.5 Chinese version.
The proxy server is Microsoft proxy server 2.0.
The network conference server is Microsoft internet locate server 2.0.
The database is Microsoft SQL Server 6.5.
Client software:
All client software adopts Win95 or Windows NT Workstation 4.0 operating system, and the front-end application software adopts MS OFFICE97 and Windows NT Workstation 4.0.
Chinese version of IE4.0 based on Win95 and related database application software and various professional application software.
Most of the software used above are Microsoft products, with advanced technology, stable performance and easy access to data resources.
Develop software:
1, web development software
Mainly use Microsoft's Visual Studio 95 software package, including:
Visual Basic 5.0
Visual Foxpro 5.0
Visual J++ 1. 1
OLE DB SDK 1. 1
Visual C++ 5.0
Page 98
Microsfot Access 97
Hot dog 4.5
2. Database application software
The structure based on client/server is adopted, and the client adopts PB6.0, VB5.0 or VC5.0, etc.
Database application development software, running on Win95.
Three. Estimated cost of network equipment:
In the cost budget here, we only calculate the approximate cost of network switches and hubs, and other costs can be calculated according to the equipment selected in actual implementation.
Computer network system equipment details and cost budget.
Chapter 5: System design of SPC exchange.
Program-controlled switch We recommend XX program-controlled switch, and its main technical indicators are as follows:
1, internal capacity 16- 10 18, external line 8-48. According to the specific situation, this scheme adopts 16 external line and 100 internal line;
64 calling ropes and 1 language mailbox;
Transmission characteristics: expansion-expansion
Withstand voltage: 50hz/ 1500v/ 1 min. The incoming line of power supply is grounded, resulting in leakage current.
Arch voltage: 200 V 10%, 50 Hz 2 Hz;
Power consumption: 50~500W (depending on the number of extensions);
Working environment:-10~40℃ and relative humidity.
Function introduction:
1. Extended service function:
Telecommunication conference
Answer the call.
Call back when the outside line is busy.
Don't disturb
Self-callback
wake-up service
Long-distance direct dial password lock
Self-test fault
Second, the switchboard traffic and function
computer operator
The switchboard forced through the inside line.
The switchboard forced an outside line.
External live broadcast or transmission service
The switchboard dials an outside line instead of an extension.
Selected extension level
Full elastic coding
Third, extension voice mail.
External callback number query
Internal callback number inquiry
Malicious telephone inquiry
Extension number query
Total phone bill inquiry
Extended level query
music
1. Charging function (charging card required)
It has the function of internal and external simultaneous calculation.
Call list output immediately
Internal storage of telephone bills
Manual and automatic half-price charging
Can be set to all local calls, suburbs, domestic and international long-distance area codes and rates.
According to the actual situation, we recommend using HDJ-256 100 door program-controlled exchange.