In this subchapter:
(1) "Educational institution" has the meaning assigned by Section 57.021.
(2) "Library" means:
(A) a public library or regional library system as those terms are defined by Section 441.122, Government Code;
(B) a library operated by an institution of higher education or a school district; or
(C) a library operated by a nonprofit corporation as defined by Section 441.221(3), Government Code.
(3) "Private network services" means telecommunications services provided to an entity described by Section 59.072(a), including broadband services, customized services, and packaged network services.
(4) "Telemedicine center" means a facility that is equipped to transmit, by video or data service, medical information for the diagnosis or treatment of illness or disease and that is:
(A) owned or operated by a public or not-for-profit hospital; or
(B) owned by a state-licensed health care practitioner and operated on a nonprofit basis.