1、1 ERRATA for TIA-968-A-I Addendum A- In the last paragraph of section two add “and Tl.TRQ.6.” to the end of the sentence as follows: After the sunset date for the criteria in 4.5.2.1.2,4.5.10, and Table 4.6 of TIA-968-A, new terminal equipment and previously approved terminal equipment that is modif
2、ied shall be approved using the criteria in TIA-968-A as modified by TIA-968-A-1 and Tl.TR0.6. B- In section two replace the words “18 months after the publication of this addendum by the ACTA” with March 8,2005. Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for
3、ResaleNo reproduction or networking permitted without license from IHS-,-,- Telecommunications Telephone Terminal Equipment Technical Requirements for Connection of Terminal Equipment to the Telephone Network - Addendum 1 1 (Addendum 1 to TIA-968-A) TELECOMMUNICATIONS INDUSTRY ASSOCIATION Copyright
4、Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license
5、 from IHS-,-,-NOTICE TIA Engineering Standards and Publications are designed 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 wi
6、th minimum delay the proper product for their particular need. The existence of such Standards and Publications shall not in any respect preclude any member or non-member of TIA fi-om manufacturing or selling products not conforming to such Standards and Publications. Neither shall the existence of
7、such Standards and Publications preclude their voluntary use by Non-TIA members, 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
8、to any patent owner, nor does it assume any obligation whatever to parties adopting 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 e
9、stablish appropriate safety and health practices and to determine the applicability of regulatory limitations before its use. (From Standards Proposal No. 3-001 6-ADl, formulated under the cognizance of the TIA TR-41.9 Subcommittee on Technical Regulatory Considerations.) Published by OTELECOMMUNICA
10、TIONS INDUSTRY ASSOCIATION 2002 Standards and Technology Department 2500 Wilson Boulevard Arlington, VA 22201 U.S.A. PRICE: Please refer to current Catalog of TIA TELECOMMUNICATIONS INDUSTRY ASSOCIATION STANDARDS AND ENGINEERING PUBLICATIONS or call Global Engineering Documents, USA and Canada (1-80
11、0-854-7179) International (303-397-7956) or search online at http:/www.tiaonline.org/standards/search-n-order.cfm All rights reserved Printed in U.S.A. Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license
12、 from IHS-,-,-Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NOTICE OF DISCLAIMER AND LIMITATION OF LIABILITY The document to which this Notice is affixed has been prepared by one or mo
13、re Engineering Committees of the Telecommunications Industry Association (“TIA”). TIA is not the author of the document contents, but publishes and claims copyright to the document pursuant to licenses and permission granted by the authors of the contents. TIA Engineering Committees are expected to
14、conduct their affairs in accordance with the TIA Engineering Manual (“Manual”), the current and predecessor versions of which are available at k 1tp:Nwww. 1konl iaz. org/sl or, b) TI .TRQ.6 and TIA-968-A; or, c) TI .TRQ.6 and TIA-968-A as modified by TIA-968-A-1. During the interval between July 15,
15、 2004, and the sunset date for the criteria in 4.5.2.1.2, 4.5.10, and Table 4.6 of TIA-968-A, newly approved terminal equipment or previously approved terminal equipment that is modified may be approved using either of the following technical criteria at the discretion of the Responsible Party: a) T
16、I .TRQ.6 and TIA-968-A; or, b) TI .TRQ.6 and TIA-968-A as modified by TIA-968-A-1. After the sunset date for the criteria in 4.5.2.1.2,4.5.10, and Table 4.6 of TIA-968-A, new terminal equipment and previously approved terminal equipment that is modified shall be approved using the criteria in TIA-96
17、8-A as modified by TIA-968-A-1. 1 Tl.TRQ.6 is the Technical Requirements Document developed by Committee Tls Technical Subcommittee T1E1 entitled “SHDSL, HDSL2, HDSU Digital Subscriber Line Terminal Equipment to Prevent Harm to the Telephone Network” and was adopted and published by ACTA. 1 Copyrigh
18、t Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-968-A-I From (see note 5) 3 CLAUSE REVISIONS Sub-rate Sub-rate Mbps Mbps (214 Wire) Satellite Tandem (4-wire) (4-wire) Lossless 1.544 1.544 4.
19、5.2 Voiceband metallic signal power Lossless Tie Trunk Port (2/4 wire) Sub-rate 1.544 Mbps Satellite Tie Trunk Port (4-wire) Sub-rate 1.544 Mbps Tandem Tie Trunk Port (4-wire) Integrated Services Trunk Ports Replace clause 4.5.2.1.2 with the following: O dB 2 dB 2 dB 2 dB 2 dB 1 dB 3 dB 3 dB 3 dB -2
20、 dB O dB O dB O dB O dB -2 dB O dB O dB O dB O dB 4.5.2.1.2 For 2-wire and 4-wire lossless tie trunk type interfaces, the maximum power of other than live voice signals delivered to a 600 ohm termination shall not exceed -1 1 dBm when averaged over any 3-second interval. Sub-rate 1.544 Mbps Digital
21、PBX-CO Trunk Ports (4-wire) Replace Table 4.6 with the following (the notes in TIA-968-A for Table 4.6 are still applicable): O dB Table 4.6 Allowable Net Amplification Between Ports (See notes 1,3,4,5, 6 and 7) To I Tie Trunk Type Ports I Integrated Services Trunk Ports Off Premises Station Ports (
22、2-wire) Analog Public Switched Network Ports (2-wire) Su b-rate 1.544 Mbps Digital PBX-CO Trunk Ports (4-wire) Approved Digital TE I -2dB I OdB I OdB I OdB I OdB I OdB I OdB On Premises Station PortwithApprovedTE I -2dB I OdB I OdB I OdB I OdB I OdB I OdB see note 2) I I I I I I I I 2dB I 4dB I 4dB
23、I 4dB I 4dB I 4dB I 4dB Off Premises Station Port (2-wire) Analog Public Switched NetworkPorts(2-wire) I I I I I 3dB I 3dB I 2 Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-968-A-
24、1 4.5.2 Encoded Analog Content Limits Replace clause 4.5.70 with the following: If approved terminal equipment contains an analog-to-digital converter or generates a data bit stream that is intended for eventual conversion into voiceband analog signals in the PSTN, the encoded analog content of the
25、digital signal shall be limited as specified in this clause. The maximum equivalent power of encoded analog content derived by a zero level decoder test configuration shall not exceed the following limits when averaged over any 3-second time interval: -9 dBm for all signals other than live voice, V.
26、90 or V.92 modems, or network control signals. -6 dBm for V.90 or V.92 modems. -3 dBm for network control signals. 0 0 0 The zero level decoder test configuration is intended to simplify measurement of the maximum encoded analog signal. The use of a zero level encoder for test purposes shall not be
27、interpreted as permission to exceed the encoded analog content limits given above when analog or digital loss is inserted in the PSTN connection by wireline carriers. 3 Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitte
28、d without license from IHS-,-,-TIA-968-A-1 4 AnnexA Replace Annex A with the following: Annex A (Normative) Grandfathered Non-Approved Terminal Equipment (normative) A. 1 Introduction The grandfather provisions in this Annex were originally contained in Part 68 of the FCC Rules. These grandfather pr
29、ovisions provide an alternative whereby certain non- approved TE can be directly connected to wireline carrier networks during a limited transition period. Clauses A.2 through A.ll provide the grandfather conditions for various types of TE. In each of the grandfather clauses below, two different dat
30、es are given. The date in item (a) of each clause is the grandfather eligibility date. The approval-only date is given in item (b) of each clause. Non-approved TE is grandfathered if it was directly connected to a wireline carrier network as of the grandfather eligibility date. Any TE identical to a
31、 grandfathered device is also eligible for grandfathering if it was directly connected prior to the approval-only date. TE cannot be grandfathered after the approval-only date. Non-approved grandfathered TE may remain connected for life, without approval, unless subsequently modified. In this Annex,
32、 the phrase “may remain connected for life“ means that grandfathered TE may remain connected, or be moved or reconnected at the same or different premises, for the life of the equipment. In this Annex, the phrase “unless subsequently modified“ is not intended to limit routine repairs that restore TE
33、 to the same functional operation and specifications it had prior to the failure that resulted in the repair operation. Instead, the phrase “unless subsequently modified“ is intended to cause grandfathered status to be lost if: - Components are replaced during a repair operation with components that
34、 are not comparable to the original ones; Changes are made to the equipment that affect the Part 68 and TIA-968- related characteristics of that equipment at the network interface or compliance with technical criteria in this standard or 47 CFR Part 68 rules; Modifications significantly change the f
35、unction(s) of the original equipment. - - In this Annex, the term “directly connected refers to any direct electrical connection, either by a telephone company or by a customer, made in accordance with the telephone companies tariffs and without a protective connecting arrangement. Thus TE that is d
36、irectly connected, within the meaning of this Annex, includes all TE supplied by telephone companies (including “connecting arrangements and data access arrangements“) as well as the following types of customer-provided equipment: Attested operators headsets and conferencing devices - - Conformed te
37、lephone answering devices - Equipment connected by many “special“ entities, e.g. gas, oil, electric, transportation companies, selected industrial firms, the Department of Defense, the National Aeronautics and Space Administration, and customers in “hazardous or inaccessible locations.“ 4 Copyright
38、Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-968-A- 1 In this Annex, the term “ofa fype“genera1ly means the same model of equipment made by the same manufacturer and is intended to mean equ
39、ipment of the same mechanical and electrical design. Non-approved, non-grandfathered equipment may only be directly connected to the network through the use of approved or grandfathered protective circuitry. A.2 Grandfathered terminal equipment (other than PBX and key telephone systems) and protecti
40、ve circuitry. a) All terminal equipment (other than PBX and key telephone systems) and protective circuitry of a type directly connected to the public switched telephone network and services identified in l.l(b) as of October 17, 1977, may remain connected for life, without approval, unless subseque
41、ntly modified. b) New installations of terminal equipments (other than PBX and key telephone systems) and protective circuitry (if any) may be performed up to July 1, 1979, without approval of any terminal equipment involved, provided that these terminal equipments are of a type directly connected t
42、o of a type directly connected to the public switched telephone network and services identified in l.l(b) as of October 17, 1977. These terminal equipments may remain connected for life, without approval, unless subsequently modified. A.3 Grandfathered systems (including, but not limited to, PBX and
43、 key telephone systems). a) Entire systems, including their equipment, premises wiring, and protective apparatus (if any) directly connected to the public switched telephone network and services identified in l.l(b) on June 1, 1978, may remain connected for life without approval, unless subsequently
44、 modified, except for modifications allowed under A.3(c). b) New installations of equipments may be performed (including additions to existing systems) up to January 1, 1980, without approval of any equipments involved, provided that these equipments are of a type directly connected to the public sw
45、itched telephone network or services identified in l.l(b) as of June 1, 1978. These equipments may remain connected for life without approval, unless subsequently modified, except for modifications allowed under A.3(c). c) Modifications to systems and installations involving unapproved equipment : 1
46、) Use of other than fully-protected premises wiring is a modification under 1.1. As an exception to the general requirement that no modification is permitted to unapproved equipment whose use is permitted under 1.1, certain modifications are authorized here-in. 2) Other than fully-protected premises
47、 wiring may be used if it is qualified in accordance with the procedures and requirements of 68.215. Since there is no “responsible party“ of unapproved equipment, the training and authority required by 68.215(c) will have to be received from the equipments manufacturer. 3) Existing separate, identi
48、fiable and discrete protective apparatus 5 Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-968-A-1 may be removed, or replaced with apparatus of lesser protective function, provided
49、that any premises wiring to which the public switched telephone network or service identified in 1.1 is there- by exposed conforms to A.3(c)(2) above. Minor modifications to existing unapproved equipments are authorized to facilitate installation or premises wiring, so long as they are performed under the responsible supervision and control of a person who complies with
