(a) As part of computerized 9-1-1 service, a service supplier shall furnish current telephone numbers of subscribers and the addresses associated with the numbers on a call-by-call basis.
(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 service supplier or business service user under Subsection (b) 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 Subsections (a) and (b).