Cal. Bus. & Prof. Code § 17592
(a) For purposes of this article:
(1) A “telephone solicitor” means any person or entity who, on his or her own behalf or through salespersons or agents, announcing devices, or otherwise, makes or causes a telephone call to be made to a California telephone number that does any of the following:
(c) Except for telephone calls described in subdivision (e), beginning on the 31st day after the Federal Trade Commission makes its first “do not call” list available to telephone solicitors, no telephone solicitor shall call any telephone number on the then current “do not call” list and do any of the following:
(e) Subdivision (c) shall not apply to any of the following:
(2) Telephone calls made pursuant to the express request of the subscriber. “Express request” may include a telephone call from a person or entity who has been provided the subscriber’s telephone number and name as a referral from a solicitor with which the subscriber has an established business relationship, if that solicitor has obtained the subscriber’s express request for the referral. “Express request” does not include any consent or permission included in any contract of adhesion. A telephone call is presumed not to be made at the express request of a subscriber if one of the following occurs, as applicable:
(f)
(2) An express written permission described in paragraph (1) shall include a clear and conspicuous disclosure of all of the following, except as provided in paragraph (3):