US lawIllinoisRegulationsTitle 83 — PUBLIC UTILITIESCHAPTER I: ILLINOIS COMMERCE COMMISSIONSUBCHAPTER f: TELEPHONE COMPANIESPart 731 — WHOLESALE SERVICE QUALITY FOR TELECOMMUNICATIONS CARRIERSSubpart I731.90083 Ill. Adm. Code 731.900Applicability of Subpart IYear: 2026Length: 13 wordsOfficial source Section 731.900 Applicability of Subpart I Subpart I is applicable to all carriers.Next83 Ill. Adm. Code 731.905