19. In this Part—

“activate”, in relation to an explosive or other lethal device, includes discharge and detonate;

“authorisation” means an authorisation given under section 22;

“cessation” means the cessation by an undertaking, in compliance with a direction, of the provision of a mobile communications service within a particular geographical area;

“cessation period” means the period, referred to in section 24(3)(c), during which an undertaking is directed, under a direction, to cease providing a mobile communications service;

“direction” means a direction issued under section 24;

“electronic communications service” has the same meaning as it has in section 2 of the Communications Regulation Act 2002;

“explosive or other lethal device” has the same meaning as it has in section 10(9) of the Criminal Justice (Terrorist Offences) Act 2005 ;

“geographical area” means a geographical area that covers all or a part of the State;

“Minister” means the Minister for Justice and Equality;

“mobile communications service” means a publicly available electronic communications service that is provided by an undertaking wholly or mainly by means of a mobile terrestrial network;

“serious threat” means an imminent threat that—

(a) an explosive or other lethal device will be activated by use of a mobile communications service provided in the State by an undertaking, and

(b) the activation of that explosive or other lethal device is likely to cause—

(i) death of a person,

(ii)serious bodily injury to a person, or

(iii) substantial damage to property;

“undertaking” means a person who is for the time being authorised or licensed in the State to provide a mobile communications service;

“user” means a person using a mobile communications service, for private or business purposes, whether or not he or she has subscribed to that service.