Section 2891.2 Of Article 3. Customer Right Of Privacy From California Public Utilities Code >> Division 1. >> Part 2. >> Chapter 10. >> Article 3.

. 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.