1、 T568.1-4-05(ANSI/TIA-568-B.1-4-2003)Commercial building telecommunications cabling standard Part 1: General requirements Addendum 4 Recognition of category 6 and 850 nm laser-optimized 50/125 m multimode optical fiber cabling CSA Standard T568.1-4-05 (ANSI/TIA-568-B.1-4-2003) Commercial building te
2、lecommunications cabling standard Part 1: General requirements Addendum 4 Recognition of category 6 and 850 nm laser-optimized 50/125 mm multimode optical fiber cabling Published in May 2005 by Canadian Standards Association A not-for-profit private sector organization 5060 Spectrum Way, Suite 100,
3、Mississauga, Ontario, Canada L4W 5N61-800-463-6727 416-747-4044 Visit our Online Store at www.ShopCSA.ca Commercial building telecommunications cabling standard Part 1: General requirements Addendum 4 Recognition of category 6 T568.1-4-05 and 850 nm laser-optimized 50/125 mm multimode optical fiber
4、cabling CSA/2 Canadian Standards Association May 2005 T568.1-4-05 Commercial building telecommunications cabling standard Part 1: General requirements Addendum 4 Recognition of category 6 and 850 nm laser-optimized 50/125 mm multimode optical fiber cabling CSA Preface This is the first edition of CS
5、A T568.1-4, Commercial building telecommunications cabling standard Part 1: General requirements Addendum 4 Recognition of category 6 and 850 mm laser-optimized 50/125 mm multimode optical fiber cabling. This Standard is an adoption of the identically titled ANSI/TIA (American National Standards Ins
6、titute/Telecommunications Industry Association) Standard 568-B.1-4-2003 and is the product of the Telecommunications Industry Association TR-42 Technical Committee, which included a number of Canadian members in order to ensure that Canadian perspectives and requirements were addressed. It is writte
7、n in SI (metric) units with yard/pound (imperial) units in parentheses. This Standard has been adopted with no technical deviations. Where code requirements or regulations necessitate changes from US to Canadian references, they should be made by the user, as follows: (a) Throughout this Standard, r
8、eplace the term “American” with “Canadian”, as applicable. (b) Throughout this Standard, replace the term “state” with “provincial or territorial”, as applicable. (c) Throughout this Standard, replace “NEC” with “CE Code, Part I” (Canadian Electrical Code), as applicable. In addition, (i) where refe
9、rence is made to “conduit”, replace it with “conduit/EMT” (electrical metallic tubing) because, in accordance with the Canadian Electrical Code, Part I, EMT is not considered a type of conduit; and (ii) the definitions of the following terms are to be taken from the Canadian Electrical Code, Part I:
10、 “Bonding”, “Ground”, and “Raceway”. (d) Throughout this Standard, where reference is made to “FCC”, replace it with “CRTC” (Canadian Radio-television and Telecommunications Commission), or “Industry Canada”, as applicable. (e) The following Standards, published by the Canadian Standards Association
11、, are adoptions of TIA/EIA Standards. The requirements of these CSA Standards take precedence over the TIA/EIA Standards on which they are based; any reference in CSA T568.1-4 to the TIA/EIA Standard is to be replaced by a reference to the equivalent Canadian Standard: Commercial building telecommun
12、ications cabling standard Part 1: General requirements Addendum 4 Recognition of category 6 T568.1-4-05 and 850 nm laser-optimized 50/125 mm multimode optical fiber cabling May 2005 Canadian Standards Association CSA/3 (i) T568.1-05, Commercial building telecommunications cabling standard Part 1: Ge
13、neral requirements; (ii) T568.2-05, Commercial building telecommunications cabling standard Part 2: Balanced twisted-pair cabling components; (iii) T568.2-1-05, Commercial building telecommunications cabling standard Part 2: Balanced twisted pair cabling components Addendum 1 Transmission performanc
14、e specifications for 4-pair 100 W category 6 cabling; (iv) T568.3-05, Optical fiber cabling components standard; and (v) T568.3-1-05, Optical fiber cabling components standard Addendum 1 Additional transmission performance specifications for 50/125 mm optical fiber cables. (f) Throughout this Standa
15、rd, replace the term “Listed” with “Approved as applied to electrical equipment”. This Standard was reviewed for Canadian adoption by the CSA Technical Committee on Telecommunications Wiring Systems, under the jurisdiction of the Strategic Steering Committee on Information and Communications Technol
16、ogy, and has been formally approved by the Technical Committee. A list of the members of the Technical Committee is available upon request. May 2005 Canadian Standards Association 2005 All rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior permiss
17、ion of the publisher. TIA material is reprinted with permission. Inquiries regarding this CSA Standard should be addressed to Canadian Standards Association 5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N6 1-800-463-6727 416-747-4044 www.csa.ca TIA STANDARD ANSI/TIA-568-B.1-4-2003
18、Approved: February 26, 2003 Commercial Building Telecommunications Cabling Standard Part 1: General Requirements Addendum 4 Recognition of Category 6 and 850 nm Laser-Optimized 50/125 m Multimode Optical Fiber Cabling TIA-568-B.1-4 (Addendum No. 4 to TIA/EIA-568-B.1) FEBRUARY 2003 TELECOMMUNICATIONS
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23、Manual, located at http:/www.tiaonline.org/standards/sfg/engineering_manual.cfm This Standard does not purport to address all safety problems associated with its use or all applicable regulatory requirements. It is the responsibility of the user of this Standard to establish appropriate safety and h
24、ealth practices and to determine the applicability of regulatory limitations before its use. (From Standards Proposal No. 3-4425-AD4, formulated under the cognizance of the TIA TR-42.1 Subcommittee on Commercial Building Telecommunications Cabling.) Published by TELECOMMUNICATIONS INDUSTRY ASSOCIATI
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38、 or call U.S.A. and Canada 1-800-854-7179, International (303) 397-7956 TIA-568-B.1-4 Recognition of Category 6 and 850 nm Laser-Optimized 50/125 m Multimode Optical Fiber Cabling TABLE OF CONTENTS 1 INTRODUCTION 1 2 CLAUSE REVISIONS.1 iTIA-568-B.1-4 1 INTRODUCTION The purpose of this addendum is to
39、 recognize balanced twisted pair category 6 cabling and 850 nm laser-optimized 50/125 m multimode optical fiber cable by revising sub-clauses 4.4, 4.5, 5.3 and 11.2.2 of TIA/EIA-568-B.1. These revisions are identified in the following text with additions shown in bold italics and deletions shown as
40、strikeout. 2 CLAUSE REVISIONS 4.4 Recognized cables Two types of cables are recognized and recommended for use in the horizontal cabling system. These cables are: a) four-pair 100-ohm category 3 (ANSI/TIA/EIA-568-B.2), category 5e (ANSI/TIA/EIA-568-B.2) or category 6 (ANSI/TIA/EIA-568-B.2-1) unshiel
41、ded twisted-pair (UTP) or screened twisted-pair (ScTP) cables (ANSI/TIA/EIA-568-B.2) b) two or more optical fiber multimode cable, either 62.5/125 m or 50/125 m (ANSI/TIA/EIA-568-B.3 or ANSI/TIA/EIA-568-B.3-1) At this time, 150-ohm shielded twisted-pair (STP-A) cable is a recognized media type (ANSI
42、/TIA/EIA-568-B.2). It is not, however, recommended for new cabling installations and is expected to be removed from the next revision of this Standard. Recognized cables, associated connecting hardware, jumpers, patch cords, equipment cords, and work area cords shall meet all applicable requirements
43、 specified in ANSI/TIA/EIA-568-B.2, ANSI/TIA/EIA-568-B.2-1, and ANSI/TIA/EIA-568-B.3 and ANSI/TIA/EIA-568-B.3-1. When bundled and hybrid cables are used for horizontal cabling, each cable type shall be recognized and meet the transmission and color-code specifications for that cable type given in AN
44、SI/TIA/EIA-568-B.2, ANSI/TIA/EIA/-568-B.2-1, and ANSI/TIA/EIA-568-B.3 and ANSI/TIA/EIA-568-B.3-1. Additionally, bundled or hybrid copper cables shall meet the bundled or hybrid cable requirements in ANSI/TIA-568-B.2. These requirements apply to hybrid cables and bundled cables assembled prior to ins
45、tallation, sometimes referred to as loomed, speed-wrap, or whip cable constructions. NOTES 1 Annex C provides a brief description of a number of other horizontal cables that have been used in telecommunications. These cables, as well as others, may be effective for specific applications. Although th
46、ese cables are not part of the requirements of this Standard, they may be used in addition to the minimum requirements of this Standard. 2 Hybrid cables consisting of optical fiber and copper conductors are sometimes referred to as composite cables. 1TIA-568-B.1-4 4.5 Choosing types of cabling This
47、Standard recognizes the importance of both voice and data telecommunications in a commercial building. A minimum of two telecommunications outlet/connectors shall be provided for each individual work area as shown in figure 4-1. One telecommunications outlet/connector may be associated with voice an
48、d the other with data. Consideration should be given to installing additional outlets/connectors based on present and projected needs. The two telecommunications outlet/connectors shall be configured as: a) One telecommunications outlet/connector shall be supported by a four-pair 100-ohm cable, cate
49、gory 3 or higher (category 5e or category 6 recommended) as specified in ANSI/TIA/EIA-568-B.2 and ANSI/TIA/EIA-568-B.2-1. b) The other/second telecommunications outlet/connector(s) shall be supported by a minimum of one of the following horizontal media. This media choice should be based on present and projected needs. 1) Four-pair 100-ohm cable, either category 5e or category 6, cable as specified in ANSI/TIA/EIA-568-B.2 and ANSI/TIA/EIA-568-B.2-1. 2) Two-fiber multimode optical fiber cable, either 62.5/125
