Network for optimizing the zero-bit rate solution-adc krone cabling Shanghai zizhu Science Park

The Phase I Project of Shanghai zizhu Science Park covers an area of about 13 square kilometers. As the core project of Phase I project, science Plaza has been constructed and some floors have been put into use. It covers an area of about 167 Mu and has a total construction area of 0.12 million square meters. It is the information digital port of the whole park and consists of seven buildings.

ADCs and its gold medal integrator Shanghai Zhixin shichuang Intelligent System Integration Co., Ltd. jointly build the "Information Transmission highway"-Integrated Wiring System for 7 buildings in zizhu garden science Plaza. More than 19 thousand types of unshielded information points are designed for this project.

User requirement analysis

According to the requirements for building zizhu campus into a world-class smart campus, its Integrated Wiring System should not only meet the current application, but also be designed for the future to support the next generation of network applications. Core requirements of Integrated Park cabling include: meeting relevant international and national standards; supporting various computer network devices and telephone systems; modular, open, flexible and scalable; multi-mode optical fiber trunk is used for vertical data, three types of log cables are used for vertical voice trunk, and single-mode optical fiber trunk cables are used for buildings. Data Communication Optical terminal and optical fiber distribution frame, and voice distribution frame are used to connect PABX and telephone bureaus or switchboard) the remote module is deployed in the central IDC.

The Integrated Wiring System of the whole park connects telephone, computer, network equipment, communication equipment and management equipment to a whole by extending to the information points of each region and room, high-speed transmission of voice, data, and images to provide comprehensive information services for internal managers and users.

The ADC company provides the owner with the complete adc krone TrueNET Class 6 unshielded system solution. There are three reasons for the recommended six categories:

1. cat6 systems not only support all existing applications, but also have incomparable parameter metrics of cat5e on the channel. Its bandwidth and transmission rate are much higher than that of cat5e cables. It supports 1.2 Gbit/s/2.4 Gbit/s ATM and Gbit/s Ethernet applications. The data transmission rate is 6 times faster than that of cat5e cables.

2. cat6 cabling is used together with optical fiber media-based vertical trunk lines to provide a complete end-to-end cabling solution for high-bandwidth applications. It is extremely advanced and especially suitable for network expansion and upgrade in the future, reduce maintenance costs.

3. Compared with cat5e systems, cat6 systems can better support width video applications.

After the Integrated Wiring System is installed, it can meet the requirements of 7 × 24 hours of normal voice, data and image transmission without rest.

Basic System Design

After the solution is determined, the basic design of the system based on the specific construction conditions is as follows: 6 categories of unshielded RJ45 modules, 6 categories of unshielded 4 pairs of twisted pair wires and 6 categories of unshielded modules are used as 6 types of horizontal links, and 12-core multimode indoor optical fiber cables are used as the data trunk; the voice trunk uses three types of log cables. The 12-core multi-mode optical fiber cable and communication cable are used for inter-building connections to achieve data and voice connections.

Adc krone TrueNET six-class cabling Solution

TrueNET is a structured cabling system launched by ADC to ensure zero-bit rate. It is specially designed for Gigabit Ethernet. The "zero-Bit Rate" will optimize the network efficiency to the maximum extent.

All ADC components are designed around the critical electrical parameter characteristic impedance.

In the network system, the cables, related components, and related hardware impedance do not match, which will cause a reflection signal. Some of the energy reflected to the sending end will cause interference, leading to signal distortion, reduces system transmission performance. The less energy it emits, the better the impedance consistency between cables, related components and related hardware, and the more complete the transmission signal. The average signal distortion is "error rate ".

According to the current international standards, the channel characteristic impedance of the Integrated Wiring System is 100 ± 15 Ω. TrueNET reduced the allowable range of changes to ± 3Ω, implementing a standard that is five times stricter than the international standard. The characteristic impedance of the TrueNET channel is 100 ±3Ω, because only when the characteristic impedance of the channel is 100 ±3Ω will the reflection signal be generated, thus ensuring "zero error rate ". However, when the characteristic impedance of the channel is controlled within 100 ±15Ω permitted by international standards, but when the channel larger than TrueNET permits 100 ±3Ω, reflection signals will still be generated, this causes an "error code ".

Subsystem Design

1. workspace Subsystem

Voice and data information sockets all use six types of modular information sockets, so the system can be interchangeable very well, thus achieving completely interchangeable Voice/Data, the line conversion between the telephone and the computer is very simple. You only need to change the jumper on the distribution frame, so that the flexibility of the Integrated Wiring System can be reflected.

Each adc krone KM8 cat6 RJ-45 unshielded module, are printed with 568A and 568B two end-to-end cable arrangement, the use of line-free design, during installation, you only need scissors to complete the client connection. This is both convenient and the construction process is simplified, so that the error probability of the client connection is significantly reduced. Using ADC patented LSA-PLUS IDC Connection Technology 45 degrees angle CARD, snap Reed silver), and card technology to achieve rapid installation; using error-free positioning technology; misfit crossover) Performance compensation; the independently designed cable management system can fix the wire pair and a single wire to determine the distance between the wire pairs.

To protect jumpers, reduce the radiation and attenuation on the bending angle, reduce the dust accumulation in the socket, and affect the electrical performance and water resistance, all the information sockets use the 86-type dust-proof panel.

2. Level Subsystem

The horizontal subsystem uses cat6 unshielded 4 pairs of twisted pair wires for horizontal connection, which extends the trunk subsystem to the work zone. Because voice and data use four pairs of cat6 unshielded twisted pair wires, it is convenient to swap all voice points and data points. Horizontal cabling uses cable trays, distribution racks in communication cable wells are laid in metal trough in the ceiling of the corridor outside the room, and the railway pipes are laid along the wall to various information points in the work area; any operation that changes the system does not affect the operation of the entire system. A weak current well is set to ensure that the horizontal wiring length between the floor information point and IDF in the weak current well cannot exceed 90 meters to meet the high-speed design's requirements on the horizontal length limit.

3. Management Zone Subsystem

The management subsystem consists of the interconnect, interconnect, distribution frame and jumper. Management points provide means to connect to other subsystems. Communication and interconnection allow you to locate or relocate a communication line to an inaccessible part of a building to easily manage the communication line. By means of a snap-in or plug-in jumper, a crossover connection connects the communication line at one end of the distribution frame to the line at the other end of the distribution frame. The plug-in line provides a simple way to reschedule the line, and does not require the installation of dedicated tools for cross-wiring.

The wiring room is in the weak current shaft. The wiring room is used to install the distribution frame and computer network communication equipment.

4. Vertical Subsystem

The trunk subsystem connects computer devices, program-controlled user switches (PABX), control centers, and management subsystems, and provides routes for connecting the main distribution frame and distribution frame in a building.

Vertical trunk lines use three types of Copper Core Cables to transmit voice and optical cables to transmit high-speed data signals. Each voice information point corresponds to a pair of UTP trunk cable, and reserves the trunk number based on the ratio of 20% of the total number of voice information points in each wiring room. Therefore, the logarithm of each trunk cable can be estimated. To each wiring management room, a 12-core multi-mode optical cable is used as the trunk.

5. device room

Voice and data distribution frames are mainly used to interconnect MDF in other zones, and place servers (computer network devices, etc.), program-controlled switches (PABX), and IDF access devices.

The voice main distribution frame uses the KRONE multi-function Voice main distribution frame. It is an open metal rack with a shape size of 2400mm x 2800mm x 900mm height x length x width ). The main distribution frame of the floor can be installed on the front, and the external distribution frame can be installed on the back. The total capacity can reach 18200. The adc krone 10 pair of rail-type switchable modules are installed on the distribution frame to connect external cables and large logarithm cables.

6. Complex trunk Subsystem

The core of the system is to prevent external interference from affecting information transmission in the building.

In the architecture subsystem of the park, the data transmission adopts a 12-core Single-Mode outdoor armored optical cable, and the voice transmission adopts an outdoor Communication Cable of 400 pairs.

After the test and acceptance of the Integrated Wiring System in the park, adc krone promised a system warranty of up to 20 years, including all components, manpower and technical support. The adc krone Integrated Wiring System will provide a stable and efficient intelligent network platform for the established technology parks.