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1.0 INTRODUCTION
Attachment 25: Appendix Line Sharing/SOUTHWESTERN BELL TELEPHONE, L.P.
SBC TEXAS/CLEC JOINT PETITIONERS
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ATTACHMENT 25: APPENDIX LINE SHARING
1.1 This Appendix sets forth terms and conditions under which SBC TEXAS will make available to CLEC the
High Frequency Portion of the Loop (HFPL) for purposes of line sharing in accordance with the FCC’s
Triennial Review Order. 1 Line Sharing is defined as the process by which CLEC provides digital subscriber
line service over the same copper loop over which SBC TEXAS is providing voice circuit switched (POTs)
service, SBC TEXAS using the low frequency portion of the loop and CLEC using the HFPL. The HFPL
consists of the frequency range on the copper loop above the range that carries analog circuit-switched
voice transmission. Terms and conditions for line splitting are provided in Appendix UNE Line Splitting. In
order to take advantage of this offer, CLEC must currently have an effective Texas Interconnection
Agreement with appropriate rates, terms, and conditions for the ordering of xDSL loops. SBC TEXAS is not
obligated to make available the HFPL as a UNE; provided, however, SBC TEXAS will continue to make the
HFPL available subject to the transitional line sharing conditions set forth in Sections 3.1-3.4.
1.2 The prices at which SBC TEXAS agrees to provide CLEC with the HFPL and associated charges are
contained in the Pricing Schedule.
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1.3 SBC TEXAS agrees to provide CLEC with access to the HFPL in accordance with the rates, terms and
conditions referenced in this Appendix Line Sharing and the general terms and conditions applicable to
xDSL under Attachment 25 of this Agreement, for CLEC to use in conjunction with xDSL technologies and
equipment to provide xDSL services to its end user customers.
1.4 To the extent that any of the provisions set forth in this Appendix Line Sharing are subject to performance
measure and/or remedies, those will be set forth in Attachment 17 of this Agreement. Nothing in this
Appendix shall constitute a waiver by either Party of any positions it may have taken or will take in the
Section 251/252 negotiations and subsequent arbitration proceeding(s), if any, or any other regulatory or
judicial proceeding.
2.0 DEFINITIONS
2.1 Definitions as written in this Appendix Line Sharing shall apply, however if undefined, the definitions set forth
in Attachment 25: DSL and Attachment 6: UNEs will apply to this Appendix.
2.2 “High Frequency Portion of the Loop” (“HFPL”) is defined as the frequency above the voice band on a
copper loop facility that is being used to carry traditional POTS analog circuit-switched voice band
transmissions. Voice band frequency of the spectrum is generally 300 to 3000 Hertz (and possibly up to
1 In the Matter of Review of the Section 251 Unbundling Obligations of Incumbent Local Exchange Carriers, CC
Docket No. 01-338, Implementation of the Local Competition Provisions of the Telecommunications Act of 1996,
CC Docket No. 96-98, Deployment of Wireline Services Offering Advanced Telecommunications Capability, CC
Docket No. 98-147 (FCC 03-36), rel. August 21, 2004.