Specialized Telecommunications Assistance Program. Public Utility Commission (PUC) of Texas and the Texas Commission for the Deaf and Hard of Hearing (TCDHH) operate a program to provide financial assistance that will allow certain individuals to receive specialized telecommunications devices. Persons who are deaf, deaf-blind, hard-of-hearing and/or speech-disabled who need special telecommunications devices in order to access the telephone network are qualified. The law was created to allow access into telephone network that is functionally equivalent to that enjoyed by individuals without a disability of hearing or speech. The Texas Universal Service Fund (TUSF) subsidizes the program.