US lawIllinoisRegulationsTitle 83 — PUBLIC UTILITIESCHAPTER I: ILLINOIS COMMERCE COMMISSIONSUBCHAPTER f: TELEPHONE COMPANIESPart 731 — WHOLESALE SERVICE QUALITY FOR TELECOMMUNICATIONS CARRIERSSubpart B731.20083 Ill. Adm. Code 731.200Applicability of Subpart BYear: 2026Length: 18 wordsOfficial source Section 731.200 Applicability of Subpart B The provisions of Subpart B are applicable to all Level 1 carriers.Next83 Ill. Adm. Code 731.205