TIA-968-B-3-2016 Telecommunications Telephone Terminal Equipment Technical Requirements for Connection of Terminal Equipment to the Telephone Network- Addendum 3 (Addendum to TIA-9.pdf

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1、 TIA-968-B-3 (Addendum to TIA-968-B) March 2016Telecommunications Telephone Terminal Equipment Technical Requirements for Connection of Terminal Equipment to the Telephone Network- Addendum 3 ANSI/TIA-968-B-3-2016 APPROVED: MARCH 23, 2016 NOTICE TIA Engineering Standards and Publications are designe

2、d to serve the public interest through eliminating misunderstandings between manufacturers and purchasers, facilitating interchangeability and improvement of products, and assisting the purchaser in selecting and obtaining with minimum delay the proper product for their particular need. The existenc

3、e of such Standards and Publications shall not in any respect preclude any member or non-member of TIA from manufacturing or selling products not conforming to such Standards and Publications. Neither shall the existence of such Standards and Publications preclude their voluntary use by Non-TIA memb

4、ers, either domestically or internationally. Standards and Publications are adopted by TIA in accordance with the American National Standards Institute (ANSI) patent policy. By such action, TIA does not assume any liability to any patent owner, nor does it assume any obligation whatever to parties a

5、dopting the Standard or Publication. 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 health practices and to determine the applic

6、ability of regulatory limitations before its use. Any use of trademarks in this document are for information purposes and do not constitute an endorsement by TIA or this committee of the products or services of the company. (From Project No. ANSI/TIA-PN-968-B-3, formulated under the cognizance of th

7、e TIA TR-41 User Premises Telecommunications Requirements, TR-41.9 Subcommittee on Technical and Administrative Regulatory Consideration). Published by TELECOMMUNICATIONS INDUSTRY ASSOCIATION Technology and Standards Department 1320 N. Courthouse Road, Suite 200 Arlington, VA 22201 U.S.A. PRICE: Ple

8、ase refer to current Catalog of TIA TELECOMMUNICATIONS INDUSTRY ASSOCIATION STANDARDS AND ENGINEERING PUBLICATIONS or call IHS, USA and Canada (1-877-413-5187) International (303-397-2896) or search online at http:/www.tiaonline.org/standards/catalog/ All rights reserved Printed in U.S.A. NOTICE OF

9、COPYRIGHT This document is copyrighted by the TIA. Reproduction of these documents either in hard copy or soft copy (including posting on the web) is prohibited without copyright permission. For copyright permission to reproduce portions of this document, please contact the TIA Standards Department

10、or go to the TIA website (www.tiaonline.org) for details on how to request permission. Details are located at: http:/www.tiaonline.org/standards/catalog/info.cfm#copyright or Telecommunications Industry Association Technology (b) there is no assurance that the Document will be approved by any Commit

11、tee of TIA or any other body in its present or any other form; (c) the Document may be amended, modified or changed in the standards development or any editing process. The use or practice of contents of this Document may involve the use of intellectual property rights (“IPR”), including pending or

12、issued patents, or copyrights, owned by one or more parties. TIA makes no search or investigation for IPR. When IPR consisting of patents and published pending patent applications are claimed and called to TIAs attention, a statement from the holder thereof is requested, all in accordance with the M

13、anual. TIA takes no position with reference to, and disclaims any obligation to investigate or inquire into, the scope or validity of any claims of IPR. TIA will neither be a party to discussions of any licensing terms or conditions, which are instead left to the parties involved, nor will TIA opine

14、 or judge whether proposed licensing terms or conditions are reasonable or non-discriminatory. TIA does not warrant or represent that procedures or practices suggested or provided in the Manual have been complied with as respects the Document or its contents. If the Document contains one or more Nor

15、mative References to a document published by another organization (“other SSO”) engaged in the formulation, development or publication of standards (whether designated as a standard, specification, recommendation or otherwise), whether such reference consists of mandatory, alternate or optional elem

16、ents (as defined in the TIA Procedures for American National Standards) then (i) TIA disclaims any duty or obligation to search or investigate the records of any other SSO for IPR or letters of assurance relating to any such Normative Reference; (ii) TIAs policy of encouragement of voluntary disclos

17、ure (see TIA Procedures for American National Standards Annex C.1.2.3) of Essential Patent(s) and published pending patent applications shall apply; and (iii) Information as to claims of IPR in the records or publications of the other SSO shall not constitute identification to TIA of a claim of Esse

18、ntial Patent(s) or published pending patent applications. TIA does not enforce or monitor compliance with the contents of the Document. TIA does not certify, inspect, test or otherwise investigate products, designs or services or any claims of compliance with the contents of the Document. ALL WARRAN

19、TIES, EXPRESS OR IMPLIED, ARE DISCLAIMED, INCLUDING WITHOUT LIMITATION, ANY AND ALL WARRANTIES CONCERNING THE ACCURACY OF THE CONTENTS, ITS FITNESS OR APPROPRIATENESS FOR A PARTICULAR PURPOSE OR USE, ITS MERCHANTABILITY AND ITS NONINFRINGEMENT OF ANY THIRD PARTYS INTELLECTUAL PROPERTY RIGHTS. TIA EX

20、PRESSLY DISCLAIMS ANY AND ALL RESPONSIBILITIES FOR THE ACCURACY OF THE CONTENTS AND MAKES NO REPRESENTATIONS OR WARRANTIES REGARDING THE CONTENTS COMPLIANCE WITH ANY APPLICABLE STATUTE, RULE OR REGULATION, OR THE SAFETY OR HEALTH EFFECTS OF THE CONTENTS OR ANY PRODUCT OR SERVICE REFERRED TO IN THE D

21、OCUMENT OR PRODUCED OR RENDERED TO COMPLY WITH THE CONTENTS. TIA SHALL NOT BE LIABLE FOR ANY AND ALL DAMAGES, DIRECT OR INDIRECT, ARISING FROM OR RELATING TO ANY USE OF THE CONTENTS CONTAINED HEREIN, INCLUDING WITHOUT LIMITATION ANY AND ALL INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES (INC

22、LUDING DAMAGES FOR LOSS OF BUSINESS, LOSS OF PROFITS, LITIGATION, OR THE LIKE), WHETHER BASED UPON BREACH OF CONTRACT, BREACH OF WARRANTY, TORT (INCLUDING NEGLIGENCE), PRODUCT LIABILITY OR OTHERWISE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. THE FOREGOING NEGATION OF DAMAGES IS A FUNDAMENT

23、AL ELEMENT OF THE USE OF THE CONTENTS HEREOF, AND THESE CONTENTS WOULD NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. ANSI/TIA-968-B-3 i TABLE OF CONTENTS 1. SCOPE 1 2. MISCELLANEOUS CHANGES . 1 2.1 Addition to Sub-clause 3.2, Acronyms & Abbreviations .1 2.2 Addition to Annex C Bibliography 1 3.

24、CHANGES TO REMOVE TYPE B RINGING REQUIREMENTS 1 3.1 Changes to Table 6 .1 3.2 Changes to Sub-clauses of 5.1.11.2 (Loop Start) 2 3.3 Changes to Sub-clauses of 5.1.12.2 (Ground Start) 3 4. ADDITION OF NEW SUB-CLAUSE FOR DSL G.FAST SPECIFICATION 5 ANSI/TIA-968-B-2 ii FOREWORD (This foreword is not part

25、 of this Standard.) This document is an addendum to TIA-968-B, Telecommunications Telephone Terminal Equipment Technical Requirements for Connection of Terminal Equipment to the Telephone Network. It was developed to add new interface requirements for a class of DSL service known as Fast Access to S

26、ubscriber Terminals (FAST) and to remove the requirements for Type B ringing. Support for Type B ringing has not been required by the ATIS-0600401.2006 (formerly T1.401) network interface standard since 2000. This addendum was produced by Subcommittee TR-41.9, Technical and Administrative Regulatory

27、 Considerations. It was developed in accordance with TIA procedural guidelines, and represents the consensus position of the Subcommittee, which served as the formulating group. It also received the concurrence of Engineering Committee TR-41, Performance and Accessibility for Communications Products

28、. The leadership of the TR-41.9 Technical and Administrative Regulatory Considerations Subcommittee (Interim Chair: Jason Nixon, Innovation, Science and Economic Development Canada) acknowledges the written contributions provided by the following individuals in the development of this addendum. Orga

29、nization Representative TIA-968-B-3 Cisco Systems, Inc. Tim Lawler Editor Whitesell Consulting LLC Stephen R Whitesell Editor Innovation, Science and Economic Development Canada Magdoly Rondon Suggestions for improvement of this document are welcome. They should be sent to: Telecommunications Indust

30、ry Association Technology and Standards Department Suite 200 1320 North Courthouse Road Arlington, VA 22201 ( http:/www.tiaonline.org ) ANSI/TIA-968-B-3 1 1. SCOPE This addendum provides changes to TIA-968-B, Telecommunications Telephone Terminal Equipment Technical Requirements for Connection of Te

31、rminal Equipment to the Telephone Network. Clause 2 provides an addition to the list of acronyms and abbreviations in sub-clause 3.2 of the standard and an additional informative reference for the bibliography in Annex C. Clause 3 removes the requirements for Type B ringing from Table 6 and from var

32、ious sub-clauses of 5.1.11 (loop start interfaces) and 5.1.12 (ground start interfaces). Clause 4 adds a new sub-clause 5.3.10 with interface requirements for a class of DSL service known as Fast Access to Subscriber Terminals (FAST1). None of the other clauses in TIA-968-B are affected. Where modif

33、ications are being made to existing text, additions to the text are shown underlined and deletions are shown using strikeout. Words that appear in underlined italics in this addendum are intended as instructions to the reader. Where those instructions make it clear that only new text is being added,

34、 underlining for the new text is omitted for ease of reading. 2. MISCELLANEOUS CHANGES 2.1 Addition to Sub-clause 3.2, Acronyms & Abbreviations Add the following acronym to sub-clause 3.2: FAST: Fast access to subscriber terminals 2.2 Addition to Annex C Bibliography Add the following informative re

35、ference to Annex C: C.11 ITU-T Recommendation G.9700 (2014), Fast access to subscriber terminals (G.fast) Power spectral density specification. 3. CHANGES TO REMOVE TYPE B RINGING REQUIREMENTS 3.1 Changes to Table 6 Revise Table 6 as follows: 1A FAST interface is also commonly referred to as G.fast

36、ANSI/TIA-968-B-2 2 Table 6 Simulated ringing voltages and impedance limitations Ringing type Range of compatible ringing frequencies (Hz) Simulated ringing voltage superimposed on 56.5 VDC Impedance limitation (ohms) A 20 3 40 to 130 V rms 1400 30 3 40 to 130 V rms 1000 B (see note) 15.3 to 34 40 to

37、 130 V rms 1600 34 to 49 62 to 130 V rms 1600 49 to 68 62 to 150 V rms 1600 NOTE Specifications for Type B ringing are no longer part of this standard. 3.2 Changes to Sub-clauses of 5.1.11.2 (Loop Start) Revise the sub-clauses of 5.1.11.2 as follows: 5.1.11.2 Limitations on equipment intended for op

38、eration on loop start telephone facilities: Approved terminal equipment and approved protective circuitry shall conform to the following limitations. 5.1.11.2.1 On-hook resistance, metallic and longitudinal (up to 100 VDC): The on-hook DC resistance between the tip and ring conductors of a loop star

39、t interface, and between each of the tip and ring conductors and earth ground, shall be greater than 5 M ohms for all DC voltages up to and including 100 V. 5.1.11.2.2 On-hook resistance, metallic and longitudinal (100 to 200 VDC): The on-hook DC resistance between tip and ring conductors of a loop

40、start interface, and between each of the tip and ring conductors and earth ground shall be greater than 30 k ohms for all DC voltages between 100 and 200 V. 5.1.11.2.3 DC current during ringing: During the application of simulated ringing, as listed in table 6, to a loop start interface, the total D

41、C current shall not exceed 3.0 mA. The equipment shall comply for each ringing type that is listed as part of the ringer equivalence. 5.1.11.2.4 Ringing frequency impedance (metallic): During the application of simulated ringing, as listed in table 6 to a loop start interface, the impedance between

42、the tip and ring conductors (defined as the quotient of applied AC voltage divided by resulting true rms current) shall be greater than or equal to the value specified in table 6. The equipment shall comply for each ringing type that is listed as part of the ringer equivalence. 5.1.11.2.5 Ringing fr

43、equency impedance (longitudinal): During the application of simulated ringing as listed in table 6 to a loop start interface, the impedance between each of the tip and ring conductors and ground shall be greater than 100 k ohms. The equipment shall comply with each ringing type listed in the ringer

44、equivalence. 5.1.11.2.6 Ringer equivalence definition: The ringer equivalence number shall be the value determined in 5.1.11.2.7 or 5.1.11.2.8, as appropriate, followed by the ringer ANSI/TIA-968-B-3 3 type letter “A” indicating the frequencies indicator representing the frequency range for which th

45、e number is valid. If ringer equivalence is to be stated for more than one ringing type, testing shall be performed at each frequency range to which ringer equivalence is to be determined in accordance with the above, and the largest resulting ringer equivalence number so determined shall be associa

46、ted with each ringing type letter designation for which it is valid. Testing shall be performed at each frequency specified for Type A ringing, and the largest ringer equivalence number so determined shall be associated with that ringing type. Requirements for Type B ringing are no longer specified

47、in this standard. 5.1.11.2.7 Ringer equivalence for equipment operating on loop start telephone facilities: The ringer equivalence shall be five times the impedance limitation listed in table 6, divided by the minimum measured AC impedance, as defined in 5.1.11.2.8 5.1.11.2.4, during the application

48、 of simulated ringing as listed in table 6. 5.1.11.2.8 Maximum ringer equivalence: All approved terminal equipment and approved protective circuitry that can affect the ringing frequency impedance shall be assigned a ringer equivalence. The sum of all such ringer equivalences on a given telephone li

49、ne or loop shall not exceed 5. In some cases, a system that has a total ringer equivalence of 5 or more may not be usable on a given telephone line or loop. 3.3 Changes to Sub-clauses of 5.1.12.2 (Ground Start) Revise the sub-clauses of 5.1.12.2 as follows: 5.1.12.2 Limitations on individual equipment intended for operation on ground start telephone facilities: Approved terminal equipment and approved protective circuitry shall conform to the following limitations: 5.1.12.2.1 DC current during ringing: During the application of simulated ringing, as listed in tab

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