(i) a person or entity engaged in providing commercial mobile service (as defined in section 332(d) of this title); or
(ii) a person or entity engaged in providing wire or electronic communicationswitching or transmission service to the extent that the Commission finds that such service is a replacement for a substantial portion of the local telephone exchange service and that it is in the public interest to deem such a person or entity to be a telecommunications carrier for purposes of this subchapter; but
(C) does not include —
(i) persons or entities insofar as they are engaged in providing information services; and
(ii) any class or category of telecommunications carriers that the Commission exempts by rule after consultation with the Attorney General.