1、 TIA STANDARD Telecommunications Telephone Terminal Equipment Handset Acoustic Performance Requirements for Analog Terminals TIA-470.110-C Revision of TIA/EIA-470-B) APRIL 2004 TELECOMMUNICATIONS INDUSTRY ASSOCIATION Representing the telecommunications industry in association with the Electronic Ind
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7、ility of regulatory limitations before its use. (From Standards Proposal No. 3-4350.110-RV3, formulated under the cognizance of the TIA TR-41.3 Subcommittee on Analog and Digital Wireline Terminals.) Published by TELECOMMUNICATIONS INDUSTRY ASSOCIATION 2004 Standards and Technology Department 2500 W
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21、from IHS-,-,-Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-470.110-C i The TR-41.3.5 Working Group acknowledges the contributions made by the following individuals in the
22、development of this standard. Name Representing Position (If Applicable) Don McKinnon AST Technology Labs Chair Ken Macdonald Microtronix Systems LTD Editor Dave Stenner Advent Instruments Inc. Fred Bonhomme Atlinks Bob Young Bob Young Associates John Bareham Consultant in Electroacoustics Glenn R.
23、Hess MWM Acoustics, LLC Dan Foley Listen Inc. Steve Temme Listen Inc. Roger Britt Nortel Richard Carey RadioShack Ron Magnuson Siemens Dr. Amar Nath Ray Sprint Al Baum Uniden Steve Kropp VTech Stephen R Whitesell VTech The TR-41.3.5 Working Group, which had the technical responsibility during the de
24、velopment of this standard, had the following participating members. Name Representing James Bress AST Technology Labs Roger Gutzwiller Aquire Roger Hunt Atlinks Tuan La Atlinks Jim McNeill Atlinks Clint Pinkham Atlinks Jim Mazzolini Casio Communications Pierluigi Pacciardi Casio Communications Ron
25、Anglikowski CIDCO Communications Rick White CIDCO Communications Phil Holland Circa Communications Dave Luneau ClassCo Harry Van Zandt ECS Technologies Berndt Martenson Ericsson Len Bleile Embedded Systems Products Yuan Fan Fanstel Copyright Telecommunications Industry Association Provided by IHS un
26、der license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-470.110-C ii Name Representing Scott Early InDesign Ron Bernot Intertek Gwyn McNew Intertek Ada Chow Industry Canada Henry Mar Industry Canada James Kemerling MX Com Jerry Freestone Nortel Greg
27、 Neal Notify Allen Woo Plantronics Tim Capizzi Sony Yoshinori Egami Sony Clifford Chamney Sprint Stan Pietrowicz Telcordia Mike Menard US West Kris Schatz VTech Julian Lee VTech Mabel Au VTech Mark Yuen VTech Larry Bell Wyle Laboratories Jim Smith Wyle Laboratories Copyright Telecommunications Indus
28、try Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-470.110-C iii TABLE OF CONTENTS 1 SCOPE _ 1 2 REFERENCES _ 2 2.1 NORMATIVE REFERENCES . 2 2.2 INFORMATIVE REFERENCES 2 3 ABBREVIATIONS, ACRONYMS, AND DEFINITIO
29、NS _ 4 3.1 ABBREVIATIONS AND ACRONYMS . 4 3.2 DEFINITIONS 5 4 TECHNICAL REQUIREMENTS _ 7 4.1 CATEGORIES OF CRITERIA. 7 4.2 GENERAL 7 4.2.1 Standard Test Positions7 4.2.2 Recommended Test Positions8 4.3 TEST CIRCUITS. 9 4.3.1 Send Testing with Artificial Lines.9 4.3.2 Receive Testing with Artificial
30、Lines9 4.3.3 Sidetone Testing with Artificial Lines.10 4.3.4 DC Feed Circuit .11 4.3.5 Termination Impedance .11 4.3.6 Artificial Lines.12 4.3.7 CPE Load Simulator 13 4.4 SEND PERFORMANCE 15 4.4.1 General.15 4.4.2 Send Frequency Response .15 4.4.2.1 Requirement 15 4.4.2.2 Method of Measurement .16 4
31、.4.3 Send Loudness Rating (SLR) 17 4.4.3.1 Basic Requirement 17 4.4.3.2 Parallel Set Off-Hook Requirement 17 4.4.3.3 Conference Mode 17 4.4.3.3.1 Requirement. 17 4.4.3.3.2 Method of Measurement 17 4.4.4 Send Linearity18 4.4.4.1 Requirement (Sinusoidal Stimulus).18 4.4.4.2 Method of Measurement .18 4
32、.4.4.3 Requirement (Artificial Speech Stimulus) 18 4.4.4.4 Method of Measurement .18 4.4.5 Send Distortion 19 4.4.5.1 Send Amplitude Normalized Total Harmonic Distortion (ANTHD)19 Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or
33、 networking permitted without license from IHS-,-,-TIA-470.110-C iv 4.4.5.2 Send ANTHD with a Parallel set 19 4.4.6 Send Noise .20 4.4.6.1 Off-Hook Noise.20 4.4.6.1.1 Requirement20 4.4.6.1.2 Method of Measurement .20 4.4.6.2 On-Hook Noise20 4.4.6.2.1 Requirement20 4.4.6.2.2 Method of Measurement .20
34、 4.4.6.3 Off-Hook Send Single Frequency Interference.20 4.4.6.3.1 General20 4.4.6.3.2 Requirement20 4.4.6.3.3 Measurement Method .20 4.4.7 Send Muting.21 4.4.7.1 Requirement 21 4.4.7.2 Method of Measurement .21 4.5 RECEIVE PERFORMANCE 22 4.5.1 General.22 4.5.2 Receive Frequency Response 22 4.5.2.1 R
35、equirement 22 4.5.2.2 Method of Measurement .23 4.5.3 Receive Loudness Rating (RLR) .24 4.5.3.1 Basic Requirement 24 4.5.3.2 Parallel Set Off-Hook Requirement 24 4.5.3.3 Conference Mode Requirement.24 4.5.3.3.1 Requirement24 4.5.3.3.2 Method of Measurement .24 4.5.4 Receive Linearity.25 4.5.4.1 Requ
36、irement (Sinusoidal Stimulus).25 4.5.4.2 Method of Measurement .25 4.5.4.3 Requirement (Artificial Speech Stimulus) 25 4.5.4.4 Method of Measurement .25 4.5.5 Receive Distortion .26 4.5.5.1 Receive Amplitude Normalized Total Harmonic Distortion (ANTHD)26 4.5.5.2 Receive ANTHD with a Parallel set26 4
37、.5.6 Receive Noise 27 4.5.6.1 Off-Hook Noise.27 4.5.6.1.1 Requirement27 4.5.6.1.2 Method of Measurement .27 4.5.6.2 Off-Hook Receive Single Frequency Interference27 4.5.6.2.1 General27 4.5.6.2.2 Requirement27 4.5.6.2.3 Measurement Method .27 4.5.7 Receiver Volume Controls.28 4.5.7.1 Requirement 28 C
38、opyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-470.110-C v 4.5.7.2 Method of Measurement .28 4.5.8 Magnetic Field for Hearing Aid Coupling.28 4.6 SIDETONE PERFORMANCE . 29 4
39、.6.1 General.29 4.6.2 Sidetone Masking Rating (STMR) 29 4.6.2.1 Requirement 29 4.6.2.2 Method of Measurement .29 4.6.3 Sidetone Echo Delay29 4.6.3.1 Recommendation.29 4.6.3.2 Method of Measurement .29 4.7 ACOUSTIC STABILITY. 30 4.7.1 Requirements .30 ANNEX A (NORMATIVE) WEIGHTING CURVES _ 32 A.1 SEN
40、D NOISE CURVES 32 A.2 RECEIVE NOISE CURVE 34 ANNEX B (NORMATIVE) CALCULATION OF LOUDNESS RATINGS _ 35 B.1 SEND LOUDNESS RATING (HANDSET):. 35 B.2 RECEIVE LOUDNESS RATING (HANDSET):. 36 B.3 SIDETONE MASKING RATING (HANDSET): 36 ANNEX C (NORMATIVE) ISO R-40 FREQUENCIES _ 38 ANNEX D (INFORMATIVE) RECEI
41、VE ACOUSTIC LIMITING_ 40 ANNEX E (INFORMATIVE) LOUDNESS RATINGS FOR TELEPHONES ON PBX, VGS AND DLCS_ 41 ANNEX F (INFORMATIVE) LOSS PLAN AND LOUDNESS RATING REFERENCES AND HIERARCHY_ 43 ANNEX G (INFORMATIVE) NOMINAL FREQUENCY RESPONSE CHARACTERISTICS AND LOUDNESS RATING CALCULATIONS _ 44 ANNEX H (INF
42、ORMATIVE) USE OF THE FREE FIELD AS THE TELEPHONOMETRIC REFERENCE POINT _ 48 Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-470.110-C vi Table of Figures Figure 1 Test circu
43、it for send measurements 9 Figure 2 Test circuit for receive measurements 9 Figure 3 Test circuit for sidetone measurements 10 Figure 4 One possible dc feed circuit 11 Figure 5 Artificial line segment 12 Figure 6 CPE load simulator V-I characteristic requirement 13 Figure 7 One possible CPE load sim
44、ulator implementation . 14 Figure 8 Send frequency response limits 16 Figure 9 Receive frequency response limits . 23 Figure 10 Reference Corner Jig (RCJ) for stability testing. 30 Figure 11 Stability face down orientation (#1) test.31 Figure 12 Stability on side orientation (#2) test 31 Figure A.1
45、Psophometric and C-Message weighting curve comparison 33 Figure A.2 A-weighting curve 34 Figure E.1 Loudness Rating Relationships for PBXs, VGs and DEOs 42 Figure F.1 Hierarchical Relationship between Loudness Rating and Loss Plan Standards 43 Figure G.1 Nominal send frequency response 46 Figure G.2
46、 Nominal receive frequency response 46 Figure H.1 Flat free field loudspeaker response .48 Figure H.2 HATS measurement of same loudspeaker 48 Figure H.3 HATS measurement of handset telephone 49 Figure H.4 Type 1 ear simulator measurement of handset telephone. 49 Copyright Telecommunications Industry
47、 Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-470.110-C vii Table of Tables Table 1 Artificial line segment component values 12 Table 2 Send frequency response limits15 Table 3 Send loudness rating limits.17 Table 4 Send linearity requirements (Sinusoidal) .18 Table 5 Send linearity requirements (Artificial Speech) .18 Table 6 Send ANTHD requirements. 19 Table 7 Receive f
