Iowa Code § 714A.1
As used in this chapter:
1. “Advertisement” means advertisement as defined in section 714.16, subsection 1, paragraph “a”. However, for purposes of this chapter, advertisement does not include a residential listing or a listing in any section of the directory in which businesses or professions are listed alphabetically rather than grouped by subject category, or a standard listing in the subject category section of a telephone directory. Advertisement also does not include a display advertisement or a listing which is made to appear more conspicuous than other listings in the subject category section of a telephone directory, provided that such display advertisement or listing includes a conspicuous disclosure that the call is a pay-per-call service and refers a reader in a clear and conspicuous manner to a page number of the directory where the reader may find an explanation of pay-per-call services. Such explanation of pay-per-call services shall include all of the following:
4.
a. “Pay-per-call service” means electronic communications products and services which are provided to end users by information or service providers, and which meet all of the following requirements:
b.
(1) Where the requirements under paragraph “a” are met, pay-per-call service includes, but is not limited to, the following:
91 Acts, ch 171, §1