(a) To ensure efficient operation of the consolidated telecommunications system at minimum cost to the state, the department shall adopt and disseminate to all agencies appropriate guidelines and operating procedures and may publish telephone directories listed under Sections 55.202 and 55.203, Utilities Code, on a state Internet website.
(b) Each agency shall comply with the policies, guidelines, and operating procedures.

(c) Telephone directories published by the department under this section and § 2170.059 must be revised regularly and must list state telephone numbers alphabetically by the subject matter of agency programs as well as alphabetically by agency. The subject matter listing of programs and telephone numbers in the telephone directories must be consistent with the categorization developed by the Records Management Interagency Coordinating Council under § 441.203. The department may authorize, under procedures and rules considered appropriate by the department, a yellow pages advertising section in the directories to recover development, publication, and distribution costs of the directories.