; (B) implemented procedures based on the framework; and (C) used reasonable care. (c) Definition of voice service 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; and (B) without limitation, any service that enables real-time, two-way voice communications, including any service that requires Internet protocol-compatible customer premises equipment (CPE) and permits out-bound calling, whether or not the service is one-way or two-way voice over Internet protocol. (d) Rule of construction Nothing in this section shall preclude the Federal Communications Commission from initiating a rulemaking pursuant to its existing statutory authority. 4. Protections from spoofed calls (a) In general Not later than 1 year after the date of enactment of this Act, and consistent with the authentication framework under paragraph (1) or paragraph (2) of section 3(a), as applicable, the Federal Communications Commission shall initiate a rulemaking to help protect a subscriber from receiving unwanted calls or text messages from a caller using an unauthenticated number. (b) Considerations In promulgating rules under subsection (a), the Federal Communications Commission shall consider— (1) the Government Accountability Office report on combating the fraudulent provision of misleading or inaccurate caller identification required by section 503(c) of division P of the Consolidated Appropriations Act 2018 ( Public Law 115–141 ; 132 Stat. 348)