R.I. Gen. Laws § 39-28-3: Regulation.

Notwithstanding any general or public law to the contrary, and with the exception of the provisions of § 39-28-4, no department, agency, commission, or political subdivision of Rhode Island shall enact, adopt, or enforce, either directly or indirectly, any law, rule, regulation, ordinance, standard, order, or other provision having the force or effect of law that regulates, or has the effect of regulating, the entry, rates, terms, or conditions of VoIP service or IP-enabled service.