; (B) in subsection (a), by inserting and 9–8–8 after 9–1–1 ; and (C) in subsection (b), by inserting and 9–8–8 after 9–1–1 . (2) Applicability (A) In general The amendments made by paragraph (1) shall apply to actions occurring on and after the date that is 2 years after the date of the enactment of this Act. (B) Exception The amendment made by paragraph (1)(C) shall not apply to the management or operation of a multi-line telephone system installed before the date that is 2 years after the date of the enactment of this Act, if such system is not able to be configured to satisfy the requirements of such amendment, without an improvement to the hardware or software of the system. (d) Definitions In this section: (1) 9–8–8 The term 9–8–8 means 9–8–8, as designated as the universal telephone number within the United States for the purpose of the national suicide prevention and mental health crisis hotline system under section 251(e)(4) of the Communications Act of 1934 ( 47 U.S.C. 251(e)(4) ). (2) Commercial mobile service The term commercial mobile service has the meaning given such term in section 332(d) of the Communications Act of 1934 ( 47 U.S.C. 332(d) ). (3) Commission The term Commission means the Federal Communications Commission. (4) Non-service-initialized handset The term non-service-initialized handset has the meaning given that term in section 9.10(o)(3)(i) of title 47, Code of Federal Regulations.