AGREEMENT

Exhibit 10.14

Portions of this exhibit have been omitted and filed separately pursuant to an application for confidential treatment filed with the Securities and Exchange Commission pursuant to Rule 24b-2 under the Securities Exchange Act of 1934, as amended.

Omissions are designated as [***].

SEVENTH AMENDMENT TO COST SHARING AND IRU

AGREEMENT

THIS SEVENTH AMENDMENT TO COST SHARING AND IRU AGREEMENT (this “Seventh Amendment”) is made and entered into as of the 6^th day of March, 2002, by and between LEVEL 3 COMMUNICATIONS, LLC, a Delaware limited liability company, (“Grantor”) and CABLE & WIRELESS USA, INC., a District of Columbia corporation, (“Grantee”).

RECITALS

A. Grantor and Grantee entered into that certain Cost Sharing and IRU Agreement dated May 25, 1999, as amended by First Amendment to Cost Sharing and IRU Agreement dated August 11, 2000, Second Amendment to Cost Sharing and IRU Agreement dated August 11, 2000, Third Amendment to Cost Sharing and IRU Agreement dated November 22, 2000, Fourth Amendment to Cost Sharing and IRU Agreement dated March 14, 2001, Fifth Amendment to Cost Sharing and IRU Agreement dated February 15, 2001, and Sixth Amendment to Cost Sharing and IRU Agreement dated August 7, 2001 (collectively, the “Agreement”).

B. Grantee desires to create a mechanism for ordering an IRU in fibers within and along building risers and to obtain an IRU in fibers within the building located at [***] where the Grantor System is located and connecting Grantee’s facilities to Grantor System.

C. Grantor desires to create a mechanism for ordering an IRU in fibers within and along building risers and to convey to Grantee an IRU in certain fibers located at [***] as further specified herein, subject to and in accordance with the terms and conditions of the Agreement applicable to Metropolitan Fibers, except for IRU Term and as otherwise set forth in this Amendment.

In consideration of good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, Grantor and Grantee hereby agree as follows:

ARTICLE 1

RISER SEGMENTS

1.02    In the event that Grantee desires to purchase Grantee Fibers in additional Riser Segments (other than the Riser Segment listed in Exhibit “A”) during the Term, Grantee may request (in writing) that Grantor provide such fibers for On-Net Riser Segments or undertake construction of same for Off-Net Riser Segments. Upon receipt of such a request, Grantor shall notify Grantee whether additional fibers are available or whether Grantor has constructed or intends to construct such additional Riser Segment and, if so. Grantor shall provide Grantee with a written notice specifying the 1RU Contribution, a Riser Segment Completion Date, a Riser Segment Interconnection Point, a Riser Segment End Point, the size and number of conduit and fibers that will be initially installed for each Off-Net Lateral Segment, and other terms and conditions relative to the proposed Riser Segment. Grantor’s written notice shall constitute a binding offer which shall be valid for a period of thirty (30) days after delivery to Grantee. Grantee shall accept such offer by delivering a written notice of acceptance to Grantor within such thirty (30) day period. Unless agreed to by the parties in writing, Grantor shall be under no obligation to provide Grantee Fibers on additional Riser Segments, and Grantee shall not be obligated to contract with Grantor for Grantee Fibers on additional Riser Segments.

ARTICLE 2

NEW RISER SEGMENT

2.01    Grantor shall construct the Riser Segment identified in Exhibit “A” and grant to Grantee an exclusive IRU in the number of fibers identified in Exhibit “A” in accordance with the terms and conditions of the Agreement applicable to Metropolitan Fibers, except for the IRU Term and as otherwise set forth in this Amendment. The Term of the IRU in the Grantee Fibers within the Riser Segment identified in Exhibit “A” shall be five (5) years from the Acceptance Date.

2.02    Grantee shall pay to Grantor an initial IRU Contribution in the amount of $[***] for the Riser Segment identified in Exhibit “A”. The initial IRU Contribution for such Riser Segment shall be due and payable within five (5) days after the execution of this Amendment.

2.03    Grantee shall pay a remaining IRU Contribution in the amount of $[***] for the Riser Segment identified in Exhibit “A”. Upon the Acceptance Date for such Riser Segment, Grantor will send Grantee an invoice for payment of the remaining IRU Contribution and Grantee shall pay such invoiced amount within thirty (30) days after receipt of such invoice.

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ARTICLE 3

MISCELLANEOUS

3.01    The Recitals are incorporated into this Seventh Amendment by this reference. Capitalized terms used but not defined in this Seventh Amendment shall have the respective meanings ascribed to them in the Agreement.

3.02    Except as amended by this Seventh Amendment, the original terms and conditions of the Agreement, as amended, shall continue in full force and effect and the Agreement, as amended, is hereby ratified and confirmed.

3.03    This Seventh Amendment may be executed in counterparts, each of which shall be deemed an original but together which shall constitute but one and the same instrument.

IN WITNESS WHEREOF, Grantor and Grantee have executed this Seventh Amendment as of the date first above written.

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EXHIBIT “A”

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