(a) A 911 public safety communications center which receives a request for emergency response outside its jurisdiction shall promptly forward the request to the public safety answering point or public safety agency responsible for that geographical area.
(b) 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.
(c) Political subdivisions may enter into mutual aid agreements to carry out the provisions of this section.