Me. Rev. Stat. tit. 35-A, § 7234

Notwithstanding any other provision of law, a person, insofar as that person is providing interconnected voice over Internet protocol service, is not subject to any regulation under this Title as a telephone utility or as a public utility unless the person is providing provider of last resort service. Nothing in this section affects the application of any provision of this Title that otherwise expressly applies to a person providing interconnected voice over Internet protocol service or to voice service providers.