For the purpose of the above instruments of the Union, the following terms shall have the meanings defined below:	
1001		Expert:  A person sent by either:	
	a)	the Government or the administration of his country, or	
	b)	an entity or an organization authorized in accordance with Article 19 of this Convention, or	
	c)	an international organization	
		to participate in tasks of the Union relevant to his area of professional competence.	
1002  
PP-94  
PP-98 
PP-06		Observer: A person sent by a Member State, organization, agency or entity to attend a conference, assembly or meeting of the Union or the Council, without the right to vote and in accordance with the relevant provisions of the basic texts of the Union.	
1003		Mobile Service: A radiocommunication service between mobile and land stations, or between mobile stations.	
1004		Scientific or Industrial Organization: Any organization, other than a governmental establishment or agency, which is engaged in the study of telecommunication problems or in the design or manufacture of equipment intended for telecommunication services.	
1005		Radiocommunication: Telecommunication by means of radio waves.	
		Note 1:	Radio waves are electromagnetic waves of frequencies arbitrarily lower than 3 000 GHz, propagated in space without artificial guide.	
		Note 2:	For the requirements of Nos. 149 to 154 of this Convention, the term “radiocommunication” also includes telecommunications using electromagnetic waves of frequencies above 3 000 GHz, propagated in space without artificial guide.	
1006		Service Telecommunication:  A telecommunication that relates to public international telecommunications and that is exchanged among the following:	
	–	administrations,	
	–	recognized operating agencies, and	
	–	the Chairman of the Council, the Secretary-General, the Deputy Secretary-General, the Directors of the Bureaux, the members of the Radio Regulations Board, and other representatives or authorized officials of the Union, including those working on official matters outside the seat of the Union.”