16 No. 3 Electronic and Postal Communications 2010 “interconnection” means the physical or logical linking of one public electronic communications network to another for the purpose of allowing the persons using one of them to be able to (a) communicate with users of the other network; or (b) make use of services provided by means of the other one; “letters” means any form of written communications in the nature of current and personal correspondence and includes postcards; “licence” means a licence issued under the provisions of this Act; “local shareholder” means shareholders of an applicant or licensee who is Tanzanian national where it is an individual or company registered in Tanzania with shares as required under section 26 of this Act; “mail bag” means any bag, container, envelope or covering in which postal articles are conveyed; “Minister” means the Minister responsible for communications except in relation to content and broadcasting services; “mobile telephone” means a mobile apparatus or mobile terminal equipment which is capable of connection to a cellular telecommunication system and which is used by a customer to transmit or receive indirect communications over such telecommunications system; “multiplex” is a digital transmission channel which combines programme material and other data in a digital form for transmission via a frequency channel; “multiplex operator” means that entity that compiles, operates content offering on a digital multiplex that decides on the conditional access and Subscriber Management System (SMS) to be used and provides signal transmission to the end user;