FEDERAL COMMUNICATIONS COMMISSION Enforcement Bureau Market Disputes Resolution Division 45 L Street NE Washington, DC 20554 Via Email May 26, 2021 Timothy M. Boucher Sean Moloney CenturyLink 1025 Eldorado Blvd Broomfield, Colorado 80021 Timothy.Boucher@lumen.com Sean.Moloney@lumen.com Charles W. Steese Douglas N. Marsh Robert H. Jackson Armstrong Teasdale LLP Marashlian & Donahue, LLC 4643 South Ulster Street, Suite 800 The CommLaw Group Denver, CO 80237 1420 Spring Hill Road, Suite 401 csteese@armstrongteasdale.com McLean, VA 22102 dmarsh@armstrongteasdale.com rhj@CommLawGroup.com Counsel for CenturyLink Communications, LLC Counsel for Teliax Colorado, LLC. Re: CenturyLink Communications, LLC, et al. (Lumen) v. Teliax Colorado, LLC. Proceeding Number 21-194, Bureau ID No. EB-21-MD-001 Dear Counsel: We write to address the formal complaint that CenturyLink Communications, LLC, WilTel Communications, LLC and Global Crossing Telecommunications, Inc. (collectively Lumen) filed against Teliax Colorado, LLC (Teliax) on May 21, 2021. The exhibits to Lumen s complaint are not Bates stamped or otherwise numbered sequentially, as required by 47 CFR § 1.721(k). We direct Lumen to file supporting materials to its complaint that comply with the Commission s rules by June 2, 2021, and to serve all participants to this proceeding with corrected electronic copies. Additional hard copies need not be provided. The amended supporting materials shall contain no substantive changes to the originally filed versions. This letter ruling is issued pursuant to sections 4(i), 4(j), and 208 of the Communications Act, 47 U.S.C. §§ 154(i), 154(j), 208, and authority delegated in sections 0.111, 0.311, and 1.720-740 of the Commission s rules, 47 CFR §§ 0.111, 0.311, 1.720-740. FEDERAL COMMUNICATIONS COMMISSION Lisa Saks Lisa Saks Assistant Division Chief Market Disputes Resolution Division Enforcement Bureau