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    ANSI TIA-470.132-2013 Telecommunications Telephone Terminal Equipment Transmission Requirements for Wideband Analog Telephones with Headsets.pdf

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    ANSI TIA-470.132-2013 Telecommunications Telephone Terminal Equipment Transmission Requirements for Wideband Analog Telephones with Headsets.pdf

    1、 TIA-470.132 December 2013Telecommunications Telephone Terminal Equipment Transmission Requirements for Wideband Analog Telephones with Headsets ANSI/TIA-470.132- 2013 APPROVED: DECEMBER 2, 2013 NOTICE TIA Engineering Standards and Publications are designed to serve the public interest through elimi

    2、nating 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 existence of such Standards and Publications shall n

    3、ot 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 members, either domestically or internationally.

    4、 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 adopting the Standard or Publication. This St

    5、andard 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 applicability of regulatory limitations before its

    6、 use. (From Standards Proposal No. ANSI/TIA-PN-470.132-D1, formulated under the cognizance of the TIA TR-41 User Premises Telecommunications Requirements, TR-41.3 Subcommittee on Analog and Digital Wireline Terminals. . Published by TELECOMMUNICATIONS INDUSTRY ASSOCIATION Technology (b) there is no

    7、assurance that the Document will be approved by any Committee 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 i

    8、ntellectual property rights (“IPR”), including pending or 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

    9、 holder thereof is requested, all in accordance with the Manual. 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 ar

    10、e instead left to the parties involved, nor will TIA opine 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

    11、 or its contents. If the Document contains one or more Normative 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 r

    12、eference consists of mandatory, alternate or optional elements (as defined in the TIA Engineering Manual, 4thedition) 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) TIA

    13、s policy of encouragement of voluntary disclosure (see Engineering Manual Section 6.5.1) 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

    14、of a claim of Essential 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 Do

    15、cument. ALL WARRANTIES, 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 PROPE

    16、RTY RIGHTS. TIA EXPRESSLY 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 RE

    17、FERRED TO IN THE DOCUMENT 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 CONSEQUE

    18、NTIAL DAMAGES (INCLUDING 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 DAMA

    19、GES IS A FUNDAMENTAL ELEMENT OF THE USE OF THE CONTENTS HEREOF, AND THESE CONTENTS WOULD NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. ANSI/TIA-470.132 i TABLE OF CONTENTS FOREWORD . v INTRODUCTION vi 1 SCOPE 1 2 NORMATIVE REFERENCES 2 3 ABBREVIATIONS, ACRONYMS, AND DEFINITIONS 3 3.1 ABBREVIATIO

    20、NS AND ACRONYMS . 3 3.2 DEFINITIONS 4 4 TESTING CONSIDERATIONS 5 4.1 GENERAL 5 4.1.1 Acoustic Test Interface Equipment . 5 4.1.2 Test Signals . 5 4.1.3 Test Position 5 4.1.4 Test Methods . 5 4.1.5 Test Points and Range of Requirements . 5 4.1.6 Subjective Tests . 5 4.2 TEST CIRCUITS 6 4.2.1 Send Tes

    21、ting 6 4.2.2 Receive Testing 6 4.2.3 Sidetone Testing 6 4.2.4 DC Feed Circuit . 6 4.2.5 Termination Impedance 7 4.2.6 Source Impedance 7 5 TECHNICAL REQUIREMENTS 8 5.1 CATEGORIES OF CRITERIA . 8 5.2 SEND PERFORMANCE . 9 5.2.1 Send Frequency Response 9 5.2.2 Send Loudness Rating (SLR) . 10 5.2.3 Send

    22、 Distortion 10 5.2.4 Send Noise On-Hook 12 5.2.5 Send Noise Off-Hook 12 5.2.6 Send Noise Off-Hook Single Frequency Interference 13 5.2.7 Send Muting 13 5.3 RECEIVE PERFORMANCE 14 5.3.1 Determination of Nominal Volume Control Setting 14 5.3.2 Receive Frequency Response . 14 5.3.3 Receive Loudness Rat

    23、ing (RLR) 15 5.3.4 Receive Distortion . 16 5.3.5 Receive Noise Off-Hook . 18 5.3.6 Receive Noise Off-Hook Single Frequency Interference 18 5.4 SIDETONE PERFORMANCE 20 5.4.1 Sidetone Masking Rating (STMR) . 20 ANSI/TIA-470.132 ii 5.4.2 Sidetone Delay . 20 5.5 ADDITIONAL PERFORMANCE PARAMETERS . 21 5.

    24、5.1 Acoustic Stability . 21 ANNEX A (NORMATIVE) A-WEIGHTING CURVE 23 ANNEX B (NORMATIVE) CALCULATION OF LOUDNESS RATINGS 24 B.1 SEND LOUDNESS RATING: . 24 B.2 RECEIVE LOUDNESS RATING: 25 B.3 SIDETONE MASKING RATING: 25 ANNEX C (NORMATIVE) ISO FREQUENCIES 27 ANNEX D (INFORMATIVE) DETERMINATION OF NOM

    25、INAL LOUDNESS RATING VALUES . 29 D.1 ANALYSIS OF EFFECTS OF TEST CONFIGURATION DIFFERENCES 29 D.2 APPLICATION TO LOUDNESS RATING VALUES . 32 ANNEX E (INFORMATIVE) LOSS PLAN AND LOUDNESS RATING REFERENCES AND HIERARCHY . 34 ANNEX F (INFORMATIVE) BIBLIOGRAPHY 35 ANSI/TIA-470.132 iii TABLE OF FIGURES F

    26、igure 1 Test circuit for send measurements . 6 Figure 2 Test circuit for receive measurements . 6 Figure 3 Test circuit for sidetone measurements 6 Figure 4 One possible dc feed circuit 7 Figure 5 Send frequency response limits . 10 Figure 6 Receive frequency response limits 15 Figure 7 Reference Co

    27、rner Jig (RCJ) for stability testing. 21 Figure 8 Headset stability test orientation #1 . 22 Figure 9 Headset stability test orientation #2 . 22 Figure A.1 A-weighting curve 23 Figure D.1 Send test configurations 30 Figure D.2 Receive test configurations 30 Figure D.3 Test configuration loop loss ef

    28、fects . 32 Figure D.4 SLR calculation example. 33 Figure D.5 RLR calculation example 33 Figure E.1 Hierarchical relationship between loudness rating and loss plan standards 34 ANSI/TIA-470.132 iv TABLE OF TABLES Table 1 Send frequency response limits 9 Table 2 Limits for send SDNR vs frequency . 11

    29、Table 3 Limits for send SDNR vs level . 11 Table 4 Send SDNR stimulus center frequencies and band limits 12 Table 5 Send SDNR analysis notch frequency band 12 Table 6 Receive frequency response limits 15 Table 7 Limits for receive SDNR vs frequency . 16 Table 8 Limits for receive SDNR vs level . 17

    30、Table 9 Receive SDNR stimulus center frequencies and band limits 17 Table 10 Receive SDNR analysis notch frequency band 17 Table 11 Reference corner headset placement for stability test 22 Table A.1 A-weighting curve 23 Table B.1 ITU-T P.79 Tables A.2 and 3, Weighting factors for calculating loudnes

    31、s ratings 26 Table C.1 ISO R-40, ISO R-10,1/12th Octave and 1/3rd Octave Frequencies 27 Table D.1 Test configuration loop loss effects. 31 ANSI/TIA-470.132 v Foreword (This foreword is not part of this standard.) This document is a TIA Telecommunications standard produced by Working Group TR-41.3.5

    32、of Committee TR-41. This standard was developed in accordance with TIA procedural guidelines, and represents the consensus position of the Working Group and its parent Subcommittee TR-41.3, which served as the formulating group. There are six annexes in this Standard. Annexes A, B, and C are normati

    33、ve and are considered part of this Standard. Annexes D, E, and F are informative and are not considered part of this Standard. Copyrighted parts of ITU-T Recommendation P.79 are used with permission of the ITU. The ITU owns the copyright for the ITU Recommendations. Copyrighted parts of ISO 3 are us

    34、ed with permission of the ISO. The ISO owns the copyright for the ISO Standards. The leadership of the TR-41.3.5 Analog Telephone Transmission Performance Working Group (Chair Stephen R Whitesell, Whitesell Consulting LLC) acknowledges the written contributions provided by the following individuals

    35、in the development of this standard. Organization Representative TIA-470.132 Consultant to Microsemi Corp Stephen R Whitesell Editor AST Technology Labs James Bress AST Technology Labs Don McKinnon Cisco Systems Tim Lawler Industry Canada Jason Nixon Industry Canada Magdoly Rondn Microsemi Corporati

    36、on Gilbert Amine Microsemi Corporation Dave Chabinec Suggestions for improvement of this standard are welcome. They should be sent to: Telecommunications Industry Association Engineering Department Suite 200 1320 North Courthouse Road Arlington, VA 22201 ( http:/www.tiaonline.org ) ANSI/TIA-470.132

    37、vi Introduction Analog telephones have traditionally been designed for transmitting and receiving audio in the 300 to 3400 Hz frequency range for legacy PSTN reasons. These telephones are increasing being used with wideband-capable residential gateways that can deliver VoIP-based telephony in the 50

    38、 to 7000 Hz frequency range. Wideband telephony offers greater audio clarity and could enable new services such as streaming audio or enhanced speech recognition. The lack of standards for wideband analog telephony has given rise to a chicken and egg situation whereby gateway manufacturers are waiti

    39、ng for wideband telephones to become available in order to offer this feature and terminal manufacturers are not developing wideband telephones for the lack of wideband voice gateways with which they can operate. This document is one of a group of standards intended to help resolve the issue. This S

    40、tandard provides wideband transmission requirements for telephones equipped with headsets. Companion documents in the ANSI/TIA-470.1X2 series provide corresponding wideband transmission requirements for telephones equipped with handsets and speakerphones. ANSI/TIA-470.132 1 Telephone Terminal Equipm

    41、ent Transmission Requirements for Wideband Analog Telephones with Headsets 1 SCOPE This standard provides acoustic transmission performance requirements for headset equipped analog telephones intended for connection to terminal adapters and voice gateways that provide wideband speech using packet-ba

    42、sed services such as Voice over Internet Protocol (VoIP). These services are often referred to as high definition or HD voice services. The specification range for this standard is 100 to 8000 Hz, but for practical reasons the actual audio bandwidth of covered devices is typically about 150 to 6800

    43、Hz. The terminal adapters and voice gateways used to provide HD voice services normally present 600 ohm impedances and are connected to the wideband telephone with very short lengths of cabling. If the wideband telephone with headset is likely to be used in applications where it may also be connecte

    44、d to narrowband voice services, such as the public switched telephone network (PSTN), that provide 900 ohm impedances and may use significant lengths of loop (cabling), then evaluation for compliance with the latest version of the ANSI/TIA-470.130 standard for narrowband analog telephones with heads

    45、ets is suggested. The requirements in this standard apply to the headset and terminal taken together. They are not intended to be a specification for a headset as a component separate from the terminal with which it is used. ANSI/TIA-470.132 2 2 NORMATIVE REFERENCES The following standards contain p

    46、rovisions, which, through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying t

    47、he most recent editions of the standards indicated below. ANSI and TIA maintain registers of currently valid national standards published by them. 1. ANSI S1.4-1983 (R 2006), Specification for Sound Level Meters 2. IEEE Std 269-2010, IEEE Standard Methods for Measuring Transmission Performance of An

    48、alog and Digital Telephone Sets, Handsets, and Headsets 3. ISO 3: 1973, Preferred Numbers - Series of Preferred Numbers 4. ITU-T Recommendation P.57 (12/2011), Artificial Ears 5. ITU-T Recommendation P.58 (12/2011), Head and Torso Simulator for Telephonometry 6. ITU-T Recommendation P.79 (11/2007),

    49、Calculation of Loudness Ratings for Telephone Sets ANSI/TIA-470.132 3 3 ABBREVIATIONS, ACRONYMS, AND DEFINITIONS 3.1 ABBREVIATIONS AND ACRONYMS For the purposes of this standard, the following abbreviations and acronyms apply. AWG American Wire Gauge DRP Drum Reference Point ERP Ear Reference Point ETSI European Telecommunications Standards Institute HATS Head And Torso Simulator ITU International Telecommunications Union MRP Mouth Reference Point OLR Overall Loudness Rating PSTN


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