(1) For the purposes of this Part, if:
(a) a local access line came into existence before the designated commencement date; and
(b) before the designated commencement date, the line was used wholly or principally to supply a superfast carriage service to non - residential customers in Australia; and
(c) on or after the designated commencement date, following:
(i) the construction or alteration of premises; or
(ii) changes to the activities carried out at premises;
the line is used wholly or principally to supply a superfast carriage service to residential customers in Australia;
the line is taken to have come into existence on or after the designated commencement date.
(2) Subsection (1) does not apply in determining the meaning of an expression used in:
(a) section 143; or
(b) sections 151ZF, 151ZG and 151ZH, to the extent to which they relate to a line to which section 143 applies; or
(c) any other provision of this Part, so far as that provision relates to:
(i) section 143; or
(ii) section 151ZF, 151ZG or 151ZH, to the extent to which that section relates to a line to which section 143 applies.