Texas Utilities Code - UTIL § 55.009. IntraLATA Calls

(a) If federal law prohibits a local exchange company in this state from providing interLATA telecommunications services, the local exchange companies in this state designated or de facto authorized to receive a “0-plus” or “1-plus” dialed intraLATA call are exclusively designated or authorized to receive such a call.

(b) A telecommunications utility operating under a certificate of operating authority or a service provider certificate of operating authority is de facto authorized to receive a “0-plus” or “1-plus” dialed intraLATA call on the date the utility receives its certificate, to the extent the utility is not restricted by Section 54.159.

(c) If federal law allows all local exchange companies to provide interLATA telecommunications services, the commission shall ensure that: