No. 18 Tanzania Communications ''postal undertaking'' means all the lands, buildings, and other property, movable or immovable, vested in the Minister immediately before the transfer date for the postal purposes of the Minister and all assets, powers, rights, interests, privileges, debts, liabilities and obligations connected therewith; ''postcard'' means a card recognised as a postcard in accordance with the terms of the Convention regulating the affairs of the Universal postal Union; it posting box'' includes any pillar box and wall box and any other box or receptacle provided by or under the authority of a public postal licensee for the purpose of receiving postal articles for transmission by, or under the authority of, a public postal Licensee; ''public postal licensee'' means a person designated by the Commission under Section 15. ''public postal licensee's installation or plant'' means any installation or plant used for posts belonging to or used by a public postal licensee: ''public telecommunication licensee'' means a person designated by the Commission under section 12. " public telecommunication licensee's installation or plant'' means any installation or plant used for telecommunications belonging to or used by a public telecommunication licensee; ''public telecommunications network'' means a telecommunications installation or plant for use by the public; " radiocommunication" means any telecommunication by means of Hertzian or radio waves; "radiocommunication service'' means any service for radiocommunications; " radiocommunication system'' means any system used or intended to be used for radiocommunications; ''shares'' in relation to a company, includes shares, debentures, bonds and other securities of the company, whether of not constituting a charge on the assets of the company; " subsidiary'' has the same meaning as in the Companies Act; ''telecommunication line'' means a wire or cable used for telecommunications with any casing, coating, tube or pipe enclosing the same and any appliance and apparatus connected therewith for the purpose of fixing or insulating the same; " telecommunication service'' means any service for telecommunications; " telecommunications successor company'' means a company established by the Tanzania Telecommunications Company Incorporation Act, 1993. 1993 7