Texas Insurance Code - INS § 4201.004. Telephone Access

(1) have appropriate personnel reasonably available, by toll-free telephone at least 40 hours per week during normal business hours in this state, to discuss patients' care and allow response to telephone review requests;

(2) have a telephone system capable, during hours other than normal business hours, of accepting or recording incoming telephone calls or of providing instructions to a caller;  and

(3) respond to a call made during hours other than normal business hours not later than the second working day after the later of: