TIA标准 TIA-968-A-5-2007 电话终端设备.pdf

tia standard telecommunications telephone terminal equipment technical requirements for connection of terminal equipment to the telephone network tia 968 a 5 addendum 5 to tia 968 a july 2007 telecommunications industry association representing the telecommunications industry in association with the electronic industries alliance ansi tia 968 a 5 approved 8 24 2007 adopted by acta july 25 2007 preface this document tia 968 a 5 telecommunications telephone terminal equipment technical requirements for connection of terminal equipment to the telephone network addendum 5 has been established pursuant to the federal communication commission s fcc report and order in the 2000 biennial review of part 68 of the commission s rules and regulations cc docket no 99 216 fcc 00 400 adopted november 9 2000 and released december 21 2000 order or r b there is no 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 intellectual 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 tia s attention a statement from the 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 are 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 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 reference consists of mandatory alternate or optional elements as defined in the tia engineering manual 4th edition 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 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 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 document 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 party s intellectual property rights tia expressly disclaims any and all responsibilities for the accuracy of the contents and makes no representations or warranties regarding the content s 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 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 consequential 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 damages is a fundamental element of the use of the contents hereof and these contents would not be published by tia without such limitations tia 968 a 5 i foreword this foreword is not part of this standard the federal communications commission fcc in its report order fcc 00 400 on fcc docket no 99 216 mandated creation of the administrative council for terminal attachments acta in 47 cfr 68 7 b acta was charged to adopt and publish technical criteria to prevent harms to the telephone network submitted to it by standards development organizations accredited by the american national standards institute ansi this document was created for submission to acta in accordance with 47 cfr 68 604 the latest requirements adopted by acta may be found at www part68 org this document is an addendum to tia 968 a telecommunications telephone terminal equipment technical requirements for connection of terminal equipment to the telephone network this addendum adds requirements for vdsl2 very high speed digital subscriber line 2 terminal equipment this addendum was produced by working group tr 41 9 1 of subcommittee tr 41 9 technical and administrative regulatory considerations it was developed in accordance with ansi and tia eia procedural guidelines and represents the consensus position of the working group and its parent subcommittee which served as the formulating group it has also received the concurrence of engineering committee tr 41 user premises telecommunications requirements committee approval of this standard does not necessarily imply that all members voted for its approval tia 968 a 5 ii tr 41 9 acknowledges the contribution made by the following individuals in the development of this addendum name representing tim lawler cisco systems matthew mulvihill industry canada phillip havens littelfuse l p teccor trone t bishop jr verizon communications suggestions for improvement of this standard are welcome they should be sent to telecommunications industry association engineering department suite 300 2500 wilson boulevard arlington va 22201 tia 968 a 5 iii table of contents 1 introduction 1 2 scope 1 3 implementation dates 1 4 clause additions revisions 2 new clause 4 5 9 3 2 table 4 12 7 tia 968 a 5 1 1 introduction section 4 of this addendum contains changes to tia 968 a the clause numbering in section 4 of this document aligns with the original clause numbers in tia 968 a and tia 968 a 3 these revisions are identified in the following text with new text underlined and deletions shown as strikeout text from tia 968 a and previous addendums not shown in this addendum remains the same words that appear in italics in this addendum are instructions to you the reader and are not to be included in the revision 2 scope this addendum provides changes to tia 968 a telecommunications telephone terminal equipment technical requirements for connection of terminal equipment to the telephone network these changes add technical criteria for vdsl2 very high speed digital subscriber line 2 terminal equipment 3 implementation dates the criteria in this addendum may be applied to terminal equipment approved after publication of this addendum tia 968 a 5 by the acta the criteria in this addendum shall be applied to terminal equipment approved 6 months after publication of this addendum tia 968 a 5 by the acta tia 968 a 5 2 4 clause additions revisions new clause 4 5 9 3 4 5 9 3 signal limitations for vdsl2 terminal equipment 4 5 9 3 1 total average power the maximum aggregate upstream transmit power in any vdsl2 operating mode shall not exceed 14 5 dbm into 100 ohms 4 5 9 3 2 power spectral density for vdsl2 over pots and vdsl2 all digital mode operation the transmitted psd shall not exceed the upstream psd masks defined in the following tables based on annex a of itu t 993 2 for the vdsl2 mode of operation for which the modem is configured the tables associated with figure 4 15 define the psd masks for vdsl2 operation over pots plain old telephone service the tables associated with figure 4 16 define the psd masks for vdsl2 all digital mode operation vdsl2 upstream operation over pots psd mask limits frequency khz limit psd mask level dbm hz 0 200 97 5 4 97 5 4 92 5 25 875 psd1 foh psd1 f int psd int 686 100 3575 100 3750 80 3750 49 5 5200 49 5 5200 80 5375 100 8375 100 8500 80 8500 50 5 12000 50 5 12000 80 12175 100 30000 100 tia 968 a 5 3 vdsl2 upstream operation over pots psd1 psd int and the frequencies foh and f int upstream mask number designator psd1 dbm hz frequency f0h khz intercept frequency f int khz intercept psd level psd int dbm hz 1 eu 32 34 5 138 00 242 92 93 2 2 eu 36 35 0 155 25 274 00 94 0 3 eu 40 35 5 172 50 305 16 94 7 4 eu 44 35 9 189 75 336 40 95 4 5 eu 48 36 3 207 00 367 69 95 9 6 eu 52 36 6 224 25 399 04 96 5 7 eu 56 36 9 241 50 430 45 97 0 8 eu 60 37 2 258 75 461 90 97 4 9 eu 64 37 5 276 00 493 41 97 9 120 110 100 90 80 70 60 50 40 30 20 psd mask dbm hz 25 875 4 0 2 foh 5200 3750 3575 686 f int 12175 12000 8500 8375 5375 30000 figure 4 15 illustrated vdsl2 upstream operation over pots psd mask tia 968 a 5 4 vdsl2 upstream all digital mode operation psd mask limits frequency khz limit psd mask level dbm hz 0 200 46 5 1 5 46 5 3 psd1 foh psd1 fint psdint 686 100 3575 100 3750 80 3750 49 5 5200 49 5 5200 80 5375 100 8375 100 8500 80 8500 50 5 12000 50 5 12000 80 12175 100 30000 100 vdsl2 upstream all digital mode operation psd1 psdint and the frequencies foh and fint upstream mask number designator psd1 dbm hz frequency f0h khz intercept frequency fint khz intercept psd level psdint dbm hz 1 adlu 32 34 5 138 00 242 92 93 2 2 adlu 36 35 0 155 25 274 00 94 0 3 adlu 40 35 5 172 50 305 16 94 7 4 adlu 44 35 9 189 75 336 40 95 4 5 adlu 48 36 3 207 00 367 69 95 9 6 adlu 52 36 6 224 25 399 04 96 5 7 adlu 56 36 9 241 50 430 45 97 0 8 adlu 60 37 2 258 75 461 90 97 4 9 adlu 64 37 5 276 00 493 41 97 9 tia 968 a 5 5 120 110 100 90 80 70 60 50 40 30 20 psd mask dbm hz figure 4 16 illustrated vdsl2 upstream all digital mode operation psd mask tia 968 a 5 6 4 5 9 3 3 longitudinal output voltage for vdsl2 over pots modes approved terminal equipment shall meet the voiceband longitudinal voltage limitations of 4 5 4 1 as well as the limitations of 4 5 5 2 1 for a center frequency of 8 khz which covers the frequency span from 4 to 12 khz in addition using the illustrative longitudinal output voltage measurement circuit in figure 4 5 vdsl2 equipment shall limit longitudinal output voltage above 12 khz to the values shown in the following table using the illustrative longitudinal output voltage measurement circuit in figure 4 5 vdsl2 equipment operating in an all digital mode shall limit longitudinal output voltage above 0 1 khz to the values shown in the following table maximum longitudinal output voltage for vdsl2 terminal equipment frequency band khz see notes 1 and 2