Fin. Code, § 1555

No foreign corporation, other than a national banking association or a foreign (other state) state bank that is authorized to conduct a trust business in this state, shall have or exercise the powers of a trust company nor directly or indirectly transact or conduct in this state a trust business as defined in Section 115. However, a foreign corporation that is authorized by its articles to exercise trust powers may act as trustee for the following purposes:

(a) To deliver bonds and receive payments therefor.

(b) To deliver permanent bonds in exchange for temporary bonds of the same issue.

(c) To deliver refunding bonds in exchange for those of a prior issue or issues.

(d) To register bonds or to exchange registered bonds for coupon bonds or coupon bonds for registered bonds.

(e) To pay interest on the bonds, and take up and cancel coupons representing the interest payment.

(f) To redeem and cancel bonds when called for redemption or to pay and cancel bonds when due.

(g) To certify registered bonds for the purpose of exchanging registered bonds for coupon bonds.

A foreign corporation that is authorized by its articles to exercise trust powers may be appointed and may accept appointment and act as trustee under any mortgage, deed of trust, or other instrument securing bonds or other obligations issued or to be issued by any railroad corporation that owns a railroad operating in the State of California and extending into another state.

A foreign corporation exercising in this state the powers conferred by this section shall not establish or maintain directly or indirectly any branch office or agency in this state unless it has complied with all of the applicable provisions of Chapter 20 (commencing with Section 1750) or of Chapter 19 (commencing with Section 1670).