50 ILCS 750/14
The General Assembly declares that a major purpose of this Act is to ensure that 9-1-1 systems have redundant methods of dispatch for: (1) each public safety agency within its jurisdiction, herein known as participating agencies; and (2) 9-1-1 systems whose jurisdictional boundaries are contiguous, herein known as adjacent 9-1-1 systems, when an emergency request for service is received for a public safety agency that needs to be dispatched by the adjacent 9-1-1 system. Another primary purpose of this Section is to eliminate instances in which a public safety agency refuses, once dispatched, to render aid outside of the jurisdictional boundaries of the public safety agency. Therefore, in implementing a 9-1-1 system under this Act, all 9-1-1 authorities shall enter into call handling and aid outside jurisdictional boundaries agreements with each participating agency and adjacent 9-1-1 system. The agreements shall provide a primary and secondary means of dispatch. It must also provide that, once an emergency unit is dispatched in response to a request through the system, such unit shall render its services to the requesting party without regard to whether the unit is operating outside its normal jurisdictional boundaries. The call handling and aid outside jurisdictional boundaries agreements shall be incorporated into the plan filed under Section 11. Notice of any changes to call handling and aid outside jurisdictional boundaries agreements must be made annually during the financial reporting process . The Illinois State Police may adopt rules for the administration of this Section.
50 ILCS 750/14