; and (B) take appropriate steps to ensure that calls originating from a provider of service in an area where the provider is exempt from the 6-month time period described in paragraph (1)(A) are not wrongly blocked because the calls are not able to be authenticated. (c) Report Not later than 6 months after the date on which the regulations under subsection (a) are prescribed, the Commission shall submit to the Committee on Energy and Commerce of the House of Representatives and the Committee on Commerce, Science, and Transportation of the Senate, and make publicly available on its website, a report on the implementation of subsection (b), which shall include— (1) an analysis of the extent to which providers of a voice service have implemented the effective call authentication technology, including whether the availability of necessary equipment and equipment upgrades has impacted such implementation; and (2) an assessment of the effective call authentication technology, as being implemented under subsection (b), in addressing all aspects of call authentication. (d) Voice service defined In this section, the term voice service — (1) means any service that is interconnected with the public switched telephone network and that furnishes voice communications to an end user using resources from the North American Numbering Plan or any successor to the North American Numbering Plan adopted by the Commission under section 251(e)(1) of the Communications Act of 1934 ( 47 U.S.C. 251(e)(1) ); and (2) includes— (A) transmissions from a telephone facsimile machine, computer, or other device to a telephone facsimile machine