New Jersey Statutes Title 52. State Government, Departments and Officers 52 § 17C-9

a. A public safety agency which receives a request for emergency service outside of its jurisdiction shall promptly forward the request to the public safety answering point or public safety agency responsible for that geographical area. Any emergency unit dispatched to a location outside its jurisdiction in response to such a request shall render service to the requesting party until relieved by the public safety agency responsible for that geographical area.

b. Municipalities may enter into written cooperative agreements to carry out the provisions of subsection a. of this section.