Texas Health and Safety Code - HEALTH & SAFETY § 772.112. Transmitting Requests for Emergency Aid

(a) A 9-1-1 system established under this subchapter must be capable of transmitting requests for fire-fighting, law enforcement, ambulance, and medical services to a public safety agency or agencies that provide the requested service at the place from which the call originates. A 9-1-1 system may also provide for transmitting requests for other emergency services such as poison control, suicide prevention, and civil defense.

(b) A public safety answering point may transmit emergency response requests to private safety entities, with the approval of the board and the consent of each participating jurisdiction and emergency services district serving the relevant area. A participating jurisdiction's or emergency services district's consent may be withdrawn at any time.

(c) With the consent of a participating jurisdiction, a privately owned automatic intrusion alarm or other privately owned automatic alerting device may be installed to cause the number 9-1-1 to be dialed in order to gain access to emergency services.