1、 TIA-4966-1 (Addendum to TIA-4966) November 2017Telecommunications Infrastructure Standard for Educational Facilities Addendum 1: Updated References, Accommodation of New Media Types ANSI/TIA-4966-1-2017 APPROVED: OCTOBER 27, 2017 NOTICE TIA Engineering Standards and Publications are designed to ser
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23、 USE OF THE CONTENTS HEREOF, AND THESE CONTENTS WOULD NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. ANSI/TIA-4966-1 i Telecommunications Infrastructure Standard for Educational Facilities Addendum 1: Updated References, Accommodation of New Media Types Table of Contents FOREWORD . ii 1 SCOPE . 1
24、 2 MODIFICATIONS TO ANSI/TIA-4966 . 1 2.1 General 1 2.2 Normative references (clause 2) 1 2.3 Recognized media for backbone cabling (subclause 5.3) . 1 2.4 Horizontal cabling, general (subclause 6.1) . 2 2.5 Recognized media for horizontal cabling (subclause 6.3) . 2 2.6 Work area, general (subclaus
25、e 7.1) . 2 2.7 Work area cords (subclause 7.2) . 2 2.8 Optical fiber cabling for MUTOAs (subclause 7.3.4.2) . 3 2.9 Consolidation point, general (subclause 7.4.1) 3 2.10 Cabling requirements (clause 16) . 3 ANSI/TIA-4966-1 ii FOREWORD (This foreword is not considered part of this Addendum.) This Add
26、endum was developed by TIA Subcommittee TR-42.1. Approval of this Addendum This Addendum was approved by TIA Subcommittee TR-42.1, TIA Engineering Committee TR-42, and the American National Standards Institute (ANSI). ANSI/TIA reviews standards every 5 years. At that time, standards are reaffirmed,
27、withdrawn, or revised according to the submitted updates. Updates to be included in the next revision should be sent to the committee chair or to ANSI/TIA. Annexes There are no annexes to this Addendum. Introduction Since the time of publication of ANSI/TIA-4966 three documents have been published b
28、y TIA TR-42 subcommittees which affect its content. In response, this Addendum revises references and accommodates new media types. Specifically: ANSI/TIA-568-C.2-1 specified a new balanced twisted-pair media type, category 8, specified to 2 GHz. Category 8 cabling supports 30-meter, 2 connection ch
29、annels. ANSI/TIA-568.3-D is published. Cabling transmission performance and test requirements for optical fiber cabling, guidelines for maintaining optical fiber polarity, and guidelines for field testing of optical fiber cabling are now contained in this revision, eliminating the need to reference
30、ANSI/TIA-568-C.0 for this information. In addition, a new media type, OM5 wideband laser-optimized multimode optical fiber cabling, is specified. OM1, OM2 and OS1 cabling is no longer supported. ANSI/TIA-4966-1 1 1 SCOPE This Addendum updates references and accommodates new media types introduced by
31、 ANSI/TIA-568-C.2-1 and ANSI/TIA-568.3-D. 2 MODIFICATIONS TO ANSI/TIA-4966 2.1 General Deleted text is shown as strikethrough. New text is shown as underline. 2.2 Normative references (clause 2) The references within clause 2, “Normative references,” shall be modified as follows: ANSI/TIA-568 C.2-20
32、09, Balanced Twisted-Pair Telecommunications Cabling and Components Standard NOTE The above reference includes the addendum, ANSI/TIA-568-C.2-1-2016. ANSI/TIA-568-C.3 2008, Optical Fiber Cabling Components Standard ANSI/TIA-568.3-D 2016, Optical Fiber Cabling and Components Standard 2.3 Recognized m
33、edia for backbone cabling (subclause 5.3) The text of 5.3, “Recognized media,” shall be modified as follows: This Standard specifies transmission media that shall be used individually or in combination in the backbone cabling. The recognized media are: a) balanced twisted-pair cabling compliant with
34、 ANSI/TIA-568-C.2 NOTES: 1 Category 6A is recommended for new installations. 2 Category 3 should be limited to analog voice applications. 3 Category 8 performance can be achieved by channels with a maximum of 2 connections to a maximum length of 30 m (98 ft). 4 Category 8 components can be used to c
35、onstruct a category 6A 100 m (328 ft) channel for transmission and power delivery. b) multimode optical fiber cabling compliant with ANSI/TIA-568-C.3ANSI/TIA-568.3-D, 2-fiber (or higher) fiber count NOTE OM4 or OM5 is recommended for new installations. c) single-mode optical fiber cabling compliant
36、with ANSI/TIA-568-C.3ANSI/TIA-568.3-D, 2-fiber (or higher) fiber count d) broadband coaxial cabling compliant with ANSI/TIA-568-C.4 ANSI/TIA-4966-1 2 2.4 Horizontal cabling, general (subclause 6.1) The text of the fourth paragraph of 6.1, “General,” shall be modified as follows: Optical fibers at th
37、e equipment outlet shall be terminated to an optical fiber outlet/connector meeting the requirements of ANSI/TIA-568-C.3ANSI/TIA-568.3-D. In new installations, where one or two fibers are used to make a connection at the equipment outlet, the LC connector (ANSI/TIA-604-10-B) should be used. Where mo
38、re than two fibers are used to make a single connection at the equipment outlet, the MPO connector (ANSI/TIA-604-5-D) should be used. 2.5 Recognized media for horizontal cabling (subclause 6.3) The text of 6.3, “Recognized media,” shall be modified as follows: Four types of media are recognized and
39、recommended for use in the horizontal cabling system. These media are: a) balanced twisted-pair cabling compliant with ANSI/TIA-568-C.2, category 5e, 6, 6A or 8 or higher NOTE Category 6A is recommended for new installations. NOTES: 1 Category 6A is recommended for new installations 2 Category 8 per
40、formance can be achieved by channels with a maximum of 2 connections to a maximum length of 30 m (98 ft). 3 Category 8 components can be used to construct a category 6A 100 m (328 ft) channel for transmission and power delivery. b) multimode optical fiber cabling compliant with ANSI/TIA-568-C.3ANSI/
41、TIA-568.3-D, 2-fiber (or higher) fiber count NOTE OM3 or OM4 is recommended for new installations c) single-mode optical fiber cabling compliant with ANSI/TIA-568-C.3ANSI/TIA-568.3-D, 2-fiber (or higher) fiber count d) broadband coaxial cabling compliant with ANSI/TIA-568-C.4, series 6 or series 11
42、2.6 Work area, general (subclause 7.1) The text of the first paragraph of 7.2, “General,” shall be modified as follows: The work area (WA) components extend from the outlet/connector end of the horizontal cabling system to the WA equipment. The telecommunications outlet/connector shall meet the requ
43、irements of ANSI/TIA-568-C.2 for balanced twisted-pair cabling, ANSI/TIA-568-C.3 ANSI/TIA-568.3-D for optical fiber cabling, or ANSI/TIA-568-C.4 for broadband coaxial cabling. To simplify relocations, consider a single type and configuration of outlet/connector for all work area outlets of the same
44、media type. 2.7 Work area cords (subclause 7.2) The text of the first paragraph of 7.2, “Work area cords,” shall be modified as follows: The maximum horizontal cable length is specified in clause 6.2 and is based on a maximum length of 5 m (16 ft) of WA cord. WA cords used in the WA shall meet or ex
45、ceed the performance requirements in ANSI/TIA-568-C.2 or ANSI/TIA-568-C.3ANSI/TIA-568.3-D. ANSI/TIA-4966-1 3 2.8 Optical fiber cabling for MUTOAs (subclause 7.3.4.2) The text of 7.3.4.2, “Optical fiber cabling,” shall be modified as follows: Optical fiber work area cords used with MUTOAs shall meet
46、the requirements of ANSI/TIA-568-C.3ANSI/TIA-568.3-D. The maximum horizontal cabling length is not affected by the deployment of a MUTOA. 2.9 Consolidation point, general (subclause 7.4.1) The text of the first paragraph of 7.4.1, “General,” shall be modified as follows: The consolidation point (CP)
47、 is an interconnection point within the horizontal cabling using ANSI/TIA-568-C.2 or ANSI/TIA-568-C.3ANSI/TIA-568.3-D compliant connecting hardware installed in accordance with the requirements of clause 13. It differs from the MUTOA in that a CP requires an additional connection for each horizontal
48、 cable run. Cross-connections shall not be used at a CP. No more than one CP shall be used within the same horizontal cable run. Each horizontal cable extend-ing to the WA outlet from the CP shall be terminated to a telecommunications outlet/connector or MUTOA, provided the requirements of 7.3.4 and
49、 the requirements of clause 16 are met. The cables and connections used at a CP shall meet the requirements of ANSI/TIA-568-C.2 or ANSI/TIA-568-C.3ANSI/TIA-568.3-D and be installed in accordance with the requirements of clause 13 (see figure 8). 2.10 Cabling requirements (clause 16) The text of clause 16, “Cabling requirements,” shall be modified as follows: The cabling shall comply with the requirements in ANSI/TIA-568-C.0, ANSI/TIA-568-C.2, ANSI/TIA-568-C.3ANSI/TIA-568.3-D and ANSI/TIA-568-C.4. THE TELECOMMUNICATIONS INDUSTRY ASSOCIATION TIA represen
