220 ILCS 45/2
In addition to any other rulemaking authority they possess, the Illinois Commerce Commission created by the Public Utilities Act, the Office of the State Fire Marshal created by the State Fire Marshal Act, and the Illinois Emergency Management Agency created by the Illinois Emergency Services and Disaster Agency Act of 1988, are authorized to adopt joint rules on the provisions of adequate fire protection and emergency notification systems at telecommunications service facilities in Illinois. In adopting rules, these agencies may consider (a) the need for emergency and other reporting requirements, including without limitation, the immediate notification of the Illinois Emergency Management Agency in the event of a major failure of telecommunications systems, and (b) any other matters relevant to the purposes of this Act. Rulemaking proceedings to adopt rules under this Act shall be conducted under the auspices of the Illinois Commerce Commission in accordance with Article X of the Public Utilities Act and the Illinois Administrative Procedure Act; provided, however, that no joint rules shall be adopted or changed except upon the concurrence of all 3 agencies.
220 ILCS 45/2