•   The object of this Part   is to define the expression network unit .

•   There are 4 types of network unit:

  (a)   a single line link connecting distinct places in Australia, where the line link meets certain minimum distance requirements;

  (b)   multiple line links connecting distinct places in Australia, where the line links meet certain minimum distance requirements;

  (c)   a designated radiocommunications facility;

  (d)   a facility specified in a Ministerial determination.