Texas Utilities Code - UTIL § 65.002. Definitions

(A) residential tone dialing service;

(B) services and functionalities supported under the lifeline program;

(C) access for all residential end users to 911 service provided by a local authority and access to dual party relay service;

(D) at the election of the incumbent local exchange company, mandatory residential extended area service arrangements, mandatory residential extended metropolitan service or other mandatory residential toll-free calling arrangements, mandatory expanded local calling service arrangements, or another service that a company is required under a tariff to provide to a customer who subscribes or may subscribe to basic network services;

(E) flat rate residential local exchange telephone service delivered by landline, but only if the service is ordered and received independent of:

(F) residential caller identification services if the customer to whom the service is billed is at least 65 years of age.