20 No. 3 Electronic and Postal Communications 2010 “virtual co-location” means a type of co-location where the party controlling the building, tower or other structure in or on which another party’s switches, antennas or other electronic communications equipment are accommodated, operates those switches, antennas or other electronic communications equipment on behalf of the other party; "user'' means any person or body of persons who uses or operates a radio communication channel or frequency or runs telecommunication systems or services; “white list” means any unique pairs of subscriber number and IMEI number as captured by a licensee of electronic communication service where IMEI is not in the black list. PART II ELECTRONIC COMMUNICATIONS (a) Licensing Power to issue licence and regulate electronic communication systems 4. (1) Subject to the provisions of this Act, the Authority shall have the power of licensing and regulating electronic communication systems and services in the United Republic. (2) The power conferred on the Authority under sub-section (1) shall (a) include the right to issue licence and to regulate the establishment, installation, use, working, maintenance, development, construction, promotion, hiring and selling of electronic communication systems and services; and (b) extend to every vessel or aircraft registered in the United Republic and to every other vessel, aircraft and any vehicle, whether mechanically propelled or not, in the United Republic. (3) The power conferred under this section shall not be infringed by -