1、 TIA STANDARD Telecommunications Telephone Terminal Equipment Resistance and Impedance Performance Requirements for Analog Telephones Addendum 1 TIA-470.210-C-1 (Addendum to TIA-470.210-C) November 2006 TELECOMMUNICATIONS INDUSTRY ASSOCIATION Representing the telecommunications industry in associati
2、on with the Electronic Industries Alliance ANSI/TIA-470.210-C-1 Approved: November 13, 2006Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NOTICE TIA Engineering Standards and P
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7、to determine the applicability of regulatory limitations before its use. (From Standards Proposal No. 3-4350.210-C-RV3-AD1, formulated under the cognizanceof the TIA, TR-41.3 User premisis Telecommunications Requirements Subcommittee on Analog and Digital Wireline Terminals). Published by TELECOMMUN
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25、ed by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-FOREWARD (This foreword is not part of this Standard.) This Addendum corrects an error made in transferring the longitudinal balance performance requirements from TIA-470-B to this docu
26、ment in the process of creating this revision. TR-41.3 acknowledges the contribution made by the following individuals in the development of this addendum: Name Representing Don McKinnon AST Technology Labs, Inc. Stephen R. Whitesell VTech This Standard was originally developed by the TR-41.3.6 Work
27、ing Group chaired by Don McKinnon of AST Technology Labs, Inc. At the time it approved this Addendum, the TR-41.3 Subcommittee had the following members: Name Representing Position James Bress AST Technology Labs, Inc. Chair Harry Van Zandt ECS Technologies Vice-Chair Don McKinnon AST Technology Lab
28、s, Inc. Ken Macdonald Microtronix Greg Slingerland Mitel Networks Roger Britt Nortel Steve Graham Plantronics Allen Woo Plantronics Amar Ray Sprint Al Baum Uniden Steve Kropp VTech Stephen R Whitesell VTech Jim Smith Wyle Labs Copyright Telecommunications Industry Association Provided by IHS under l
29、icense with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-470.210-C-1 i TABLE OF CONTENTS 1. INTRODUCTION1 2. SCOPE 1 3. CLAUSE REVISION.1 Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction
30、 or networking permitted without license from IHS-,-,-TIA-470.210-C-1 1 1. INTRODUCTION Section 3 of this addendum contains a change to TIA-470.210-C. The information in section 3 of this document identifies the original clause number in TIA-470.210-C that is to be changed. The other clauses in TIA-
31、470.210-C are not affected. 2. SCOPE This addendum only provides changes to TIA-470.210-C, “Telecommunications Telephone Terminal Equipment Resistance and Impedance Performance Requirements for Analog Telephones”. 3. CLAUSE REVISION Replace Figure 17 in clause 4.9.1 with the following figure: 454751
32、57616630405060708090100 1000 10000Frequency (Hz)dBUnacceptable RegionAcceptable Region(no maximum limit)Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Copyright Telecommunicati
33、ons Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
