California Code, Public Utilities Code - PUC § 2875.5

(a) On and after July 1, 2002, no person operating any automatic equipment that incorporates a storage capability of telephone numbers to be called or a random or sequential number generator capable of producing numbers to be called may make a telephone connection for which no person, acting as an agent or telemarketer, is available for the person called.

(b) Notwithstanding subdivision (a), the commission shall establish an acceptable error rate for telephone connections made in violation of subdivision (a). The commission shall determine the error rate, if any, before July 1, 2002.

(c) The commission may require any person operating equipment as described in subdivision (a) to maintain records of telephone connections made for which no person, acting as an agent or telemarketer, is available for the person called. The commission may require copies of those records to be submitted to the commission.