General Cabling Ansi/tia/eia568-b:6 Cable Standard

1 cabling standard for copper-cable twisted pair Line 6
Integrated wiring copper twisted pair Line 6 line standard has been formally introduced. With the rapid development of computer technology, people's demand for fast communication has increased the requirement of high transmission rate of broadband belt, and the bandwidth of the integrated cabling system is increasing continuously as the communication platform of the network. Integrated wiring system copper twisted-pair line from 5 types of development for the Super 5 category, the current 6 types of twisted-pair cable is also gradually accepted by users. 2001 has been compiled after more than 10 revisions, June 2002 Ansi/tia/eia568-b copper twisted-pair line 6 line standard has been formally introduced. International Standard ISO/IECJTC/SC 25/WG3 N 598 Working group prepared copper wire 6 class line standards will also be formally introduced. When the Super 5 products will replace the original standard 5 categories of products.
　　
Ansi/tia/eia568-b standards evolved from the ANSI/TIA/EIA568-A Standard, the Ansi/tia/eia standard belongs to the North American Standard series, in the world has been playing a comprehensive wiring product guide work. The new 568-b standard is divided into three parts: 568-B1 General cabling System requirements, 568-B2 balance twisted pair wiring components and 568-B3 fiber cabling components.
　　
(1) 568-B1 General cabling System requirements
　　
In this part of the new standard, the design principle of the telecommunication cabling system, the installation criteria and the content related to the field test are included.
　　
(2) 568-b2 balance twisted pair wiring components
　　
In this part of the new standard, the component specification, transmission performance, system model, and user verification of the telecommunication wiring system's measurement program are included.
　　
(3) 568-B3 Fiber cabling Components
　　
In this part of the new standard, the component specification and transmission requirements of the fiber-optic telecommunication cabling system are included.
　　
2 ansi/tia/eia568-a and ansi/tia/eia568-b main difference points
2.1 New terminology
　　
(1) The term "attenuation" is replaced by "insertion loss", which indicates the amount of signal loss on the link and channel.
　　
(2) Change between telecommunication (TC) to Telecommunication (TR).
　　
(3) Change "Basic link" to "permanent link"
　　
2.2 Media types
　　
(1) Horizontal cable 4 pairs of 100ω3-type UTP or SCTP 4 pair 100ω 5 type UTP or SCTP 2 or more 62.5/125μm or 50/125μm multimode fiber
　　
(2) Main cable 100ω twisted-pair line, 3 or higher;
　　
62.5/125μm or 50/125μm multimode fiber; single mode fiber.
　　
(3) 568-b standard does not recognize 4 pairs of 4 twisted pair and 5 type twisted pair cable
　　
(4) 150ω shielded twisted pair is a recognized type of media, however, it is not recommended to use when installing new devices.
　　
(5) Mixed and multiple cables are allowed for horizontal wiring, but each cable must meet the corresponding level requirements and meet the special requirements of mixed and multiple strands of cable.
　　
2.3 Socket device Line and jumper
　　
(1) The rated attenuation rate of the UTP jump wiring and the equipment line for 24AWG (0.51mm) Multiple strands of conductors is 20%. The attenuation rate of the SCTP cable with 26AWG (0.4mm) conductor is 50%.
　　
(2) The Super 5 class of modular cable needs to be connected and tested at the factory front.
　　
(3) Multi-strand cable due to greater flexibility, recommended for the jump wiring device.
　　
2.4 Distance Change
　　
(1) Now, for UTP Hop and device lines, the maximum length of the horizontal permanent link is 5m (16 ft) to reach the total channel distance of 100m (328 ft).
　　
(2) for the level two trunk, the distance between the intermediate jumps to the horizontal hop (1C to HC) is reduced to 300m (984 ft). The total distance from the main link to the horizontal hop (MC to HC) is still governed by the 568-A standard.
　　
(3) The device line and the jump wiring connected with other trunk wiring types in the middle hop shall be changed from "should not" exceed 20m (66 ft) to "no" exceeding 20m (66 ft).
　　
2.5 Installation Rules
　　
(1) 4 The bending radius of the SCTP cable under the condition of non stress is 8 times times of the cable diameter.
　　
(2) The bending radius of a 2-strand or 4-strand fiber is 25mm (1 in.) Under non stress conditions and is 50mm (2 inches) during stretching.
　　
(3) The cable manufacturer shall determine the bending radius requirements of the optical fiber main trunk line. If the bending radius information cannot be obtained from the manufacturer, the internal cable in the building has a bending radius of 10 times times the cable diameter under the stress condition and 15 times times under pressure. Under the condition of non stress/pressure, the bending radius of cable between buildings should be the same as the bending radius of cable in building.
　　
(4) Cable manufacturers should determine the number of optical fiber main lines of the pull.
　　
(5) 2-core or 4-core optical fiber pull pull is 222N (501BF).
　　
(6) The Super 5 type twisted-pair cable opening distance of the end point should be kept within 13mm (0.5 inches), 5 types of twisted pair should be kept within 75mm (3 inches).
　　
2.6 Ansi/tia/eia568-b Some appendices should be adjusted or awaiting adoption
　　
(1) 568-b 1-1 Appendix 1-4. Minimum bending radius for UTP and 4 pair SCTP connectors. The minimum internal bending radius of 4 pairs of UTP connectors under non stress conditions shall be 6mm (0.25 inches). 4 the minimum bending radius of the SCTP connector line under non stress conditions shall be 50mm (2 inches).
　　
(2) 568-b 1-2 Appendix 2. Shielding the horizontal wiring of the grounding and connection. (To be determined) the purpose of compiling this appendix is to specify the additional grounding and connection requirements for the installed shielded cable and the connecting hardware.
　　
(3) 568-b 2-1 Appendix 1. 4 The transmission Performance specification of the 100Ω6 type wiring. (To be determined) the purpose of compiling this appendix is to address interoperability issues for various products of different manufacturers.
　　
(4) 568-b 3-1 Appendix 1. Specification for additional transmission performance of 50/125μm optical fibres. (To be determined) the purpose of this appendix is to provide additional specifications for multimode fiber wiring under the 850μm laser light source to support the 10gbit/s serial transfer rate at 300m (984 ft) distances.
　　
3 to grasp the revision of domestic integrated wiring standards
　　Integrated wiring products in the domestic market share in the at&t accounted for 80~90% (1997 ago) Lucent accounted for 40~50% (other lit, Simon, AMP accounted for 20~30% 2000 years ago) Avaya accounted for 30~40% (other lit, Simon, amp accounted for 30~40% 2002 years ago) are foreign products dominate the position. Domestic products in 2001-2002 years has reached about 10%, manufacturers have 70~80. The use of products is such a situation, the previous major use of foreign products. Integrated wiring standards are mainly used abroad standards. Our country China Engineering Construction Standardization Association in 1995 issued the first cecs72:95 "building and complex cabling system engineering design code." The ansi/tia/eia568 standard is referenced in this specification, and the unshielded twisted pair (UTP) is used as the integrated wiring twisted pair. After reference to the ANSI/TIA/EIA568-A standard, at the same time on the market in accordance with European standards for the implementation of shielded twisted-pair, the cecs72:95 was modified. China Engineering Construction Standardization Association issued cecs72:97 "Building and complex cabling Engineering design Code" How to choose UTP and FTP is one of the key points of modification. Then the State promulgated the standard of the People's Republic of China. gb/t50311-2000 "Construction and building complex cabling system engineering design Code"; gb/t50312-2000 "Construction and building complex cabling system engineering acceptance Code" GB/T50314-2000 "Intelligent Building Design standards" (The 8th chapter is the content of the integrated system) with the above mentioned Chinese Engineering Construction Standardization Association CECS72:97 become China's current comprehensive wiring standard specification, and international wiring standard has been integrated. However, China's current four integrated wiring specifications are based on the North American ansi/eia/tia568a standards, with international standards iso/iec11801 "information technology-User Cabling" 1995 version as a reference, Copper wires are only written to 5 categories and now the market is heavily used in the 5e and 6 classes. And the standard situation North American ansi/eia/tia/568b has replaced ansi/eia/tia/568a. The new ISO/IEC 11801 version will also replace the International standard ISO/IEC 11801 1995 version. Times in advance, technology in the development of integrated wiring of new products to adapt to the needs of the network communication platform. The standard specification is to be modified with it. China's integrated wiring standards of the main units, whether the Chinese Construction Standardization Association standards or the People's Republic of China National standards are the original Ministry of Posts and Telecommunications Beijing Institute of Communications (now Beijing and Telecommunications Design Institute) mainly for the preparation, now suggest that should continue to assume the responsibility to carry out this work.