US lawIllinoisRegulationsTitle 83 — PUBLIC UTILITIESCHAPTER I: ILLINOIS COMMERCE COMMISSIONSUBCHAPTER f: TELEPHONE COMPANIESPart 731 — WHOLESALE SERVICE QUALITY FOR TELECOMMUNICATIONS CARRIERSSubpart E731.50083 Ill. Adm. Code 731.500Applicability of Subpart EYear: 2026Length: 18 wordsOfficial source Section 731.500 Applicability of Subpart E The provisions of Subpart E are applicable to all Level 1 carriers.Next83 Ill. Adm. Code 731.505