California Code, Health and Safety Code - HSC § 11027

(a) “Prescription” means an oral order or electronic transmission prescription for a controlled substance given individually for the person(s) for whom prescribed, directly from the prescriber to the furnisher or indirectly by means of a written order of the prescriber.

(b) “Electronic transmission prescription” includes both image and data prescriptions.  “Electronic image transmission prescription” is any prescription order for which a facsimile of the order is received by a pharmacy from a licensed prescriber.  “Electronic data transmission prescription” is any prescription order, other than an electronic image transmission prescription, which is electronically transmitted from a licensed prescriber to a pharmacy.