s 4 Exceptions to section 3
4. The privilege conferred by section 3 is not infringed by —(a) the running by a person solely for the person’s own use or solely for the purposes of the person’s business (but not for providing any telecommunication service to another person) of a telecommunication line system in which all the equipment comprised therein is situated —(i) on a single set of premises in single occupation; or (ii) in a vessel, aircraft or vehicle or in 2 or more vessels, aircraft or vehicles mechanically coupled together; or (b) the operation of any telecommunication system in the course of their duties by the officers and men and women of the Singapore Armed Forces, the Singapore Police Force, the Singapore Civil Defence Force or of any visiting force lawfully present in Singapore.