Okla. Stat. tit. 21, § 21-1862: Commercial solicitation by facsimile device -

Definitions.

As used in this act:

"Facsimile device" means a machine capable of receiving and

reproducing facsimiles of text or images transmitted electronically

or telephonically through telecommunication lines connecting to the

machine; and

"Commercial solicitation" means an unsolicited electronic or

telephonic transmission to a facsimile device to encourage the

purchase of goods, realty, services or to advertise availability of

such goods, realty or services. Commercial solicitation shall not

include an electronic or telephonic transmission to a facsimile

device:

a. made in the course of prior negotiations,

b. made to a party with whom there was a prior business

relationship or an existing relationship,

c. made in the course of a follow up to a sales call, sales

lead or other business-related contact; or

d. made after normal business hours and two pages or less in

length.