(a) As part of computerized 9-1-1 service, a service supplier shall furnish for each call the telephone number of the subscriber and the address associated with the number.
(b) A business service user that provides residential facilities and owns or leases a publicly or privately owned telephone switch used to provide telephone service to facility residents shall provide to those residential end users the same level of 9-1-1 service that a service supplier is required to provide under Subsection (a) to other residential end users in the district.

(c) Information furnished under this section is confidential and is not available for public inspection.
(d) A business service user that owns or leases a publicly or privately owned telephone switch used to provide telephone services to nonaffiliated businesses shall provide to those business end users the same level of 9-1-1 service that a service supplier is required to provide under Subsection (a) to other business end users in the district.
(e) A business service user that owns or leases a publicly or privately owned telephone switch used to consolidate telephone services at two or more physical addresses shall provide a level of 9-1-1 service that identifies an accurate physical address and telephone number for each 9-1-1 call. For purposes of this section, each floor of a multitenant building is a different physical address.
(f) A hotel, motel, or similar lodging facility that does not operate with a 24-hour, seven-day on-site telephone operator must use a system that furnishes the telephone number and location of the individual unit from which a 9-1-1 call is placed.
(g) A service supplier, business service user, or lodging facility that implements the network and database enhancements necessary to provide a service described in Subsection (b), (d), (e), or (f), including a supplier, user, or facility that is not required to provide the service, is not liable to a person who uses a 9-1-1 system created under this subchapter for the release to the district of the information specified in this section.
(h) Subsections (d) and (e) do not apply to a telecommunications system installed by a public school district or a state agency.
(i) Subsections (d), (e), and (f) apply only to a telecommunications system installed on or after September 1, 2003.