Illinois - Retail Guidebook Updates
Effective
Description
Package
11/24/2025
Update Grandfathering language - Access Lines and trunks, ISDN PRI, Centrex, and Central Office Services
IL-25-0032
11/01/2025
RCF, DS1, DS3 and OC-n Point-To-Point Services Grandfathering
IL-25-0024