California Code
ARTICLE 3 - Customer Right of Privacy
Section 2891.2.

2891.2. Telephone subscribers shall be annually notified that use of an “800” or “900” telephone number may result in the disclosure of the subscriber’s telephone number to the called party. The commission shall, by rule or order, impose the responsibility for the notification with the telephone corporation that offers the caller identification service, often known as automatic number identification, in connection with an “800” or “900” service.

(Added by Stats. 1993, Ch. 351, Sec. 1. Effective January 1, 1994.)