83 Ill. Adm. Code 1326.200
General Standards and Requirements
Section 1326.200 General
Standards and Requirements
The digits "9-1-1"
shall be the primary emergency telephone number within a county or municipality
that has received Commission or Department authority to operate as a 9-1-1
system. In areas where Enhanced 9-1-1 is available, a private business switch
operator must ensure that its system is capable of meeting the requirements set
forth in Section 1326.205. Nothing in this Section shall require changes in
customary dialing patterns (i.e., using the prefix or access code 9 to obtain
an outside line before dialing 9-1-1) for those PEAPs that are exempt pursuant
to ETSA Section 15.8.